include/nfsc/libnfs.h

   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  * This is the highlevel interface to access NFS resources using a posix-like interface
  19  */
  20
  21 #ifndef _LIBNFS_H_
  22 #define _LIBNFS_H_
  23
  24 #include <stdint.h>
  25 #if defined(ANDROID)
  26 #include <sys/time.h>
  27 #endif
  28 #if defined(AROS)
  29 #include <sys/time.h>
  30 #endif
  31 #if defined(__APPLE__) && defined(__MACH__)
  32 #include <sys/time.h>
  33 #endif
  34
  35 #ifdef __cplusplus
  36 extern "C" {
  37 #endif
  38
  39 #define LIBNFS_FEATURE_READAHEAD
  40 #define NFS_BLKSIZE 4096
  41
  42 struct nfs_context;
  43 struct rpc_context;
  44
  45 struct nfs_url {
  46         char *server;
  47         char *path;
  48         char *file;
  49 };
  50
  51 #if defined(WIN32)
  52 #define EXTERN __declspec( dllexport )
  53 #else
  54 #define EXTERN
  55 #endif
  56
  57 #if defined(WIN32)
  58 struct statvfs {
  59         uint32_t        f_bsize;
  60         uint32_t        f_frsize;
  61         uint64_t        f_blocks;
  62         uint64_t        f_bfree;
  63         uint64_t        f_bavail;
  64         uint32_t        f_files;
  65         uint32_t        f_ffree;
  66         uint32_t        f_favail;
  67         uint32_t        f_fsid;
  68         uint32_t        f_flag;
  69         uint32_t        f_namemax;
  70 };
  71 struct utimbuf {
  72         time_t actime;
  73         time_t modtime;
  74 };
  75 #define R_OK    4
  76 #define W_OK    2
  77 #define X_OK    1
  78 #endif
  79
  80 /*
  81  * Used for interfacing the async version of the api into an external eventsystem
  82  */
  83 EXTERN int nfs_get_fd(struct nfs_context *nfs);
  84 EXTERN int nfs_which_events(struct nfs_context *nfs);
  85 EXTERN int nfs_service(struct nfs_context *nfs, int revents);
  86 EXTERN int nfs_queue_length(struct nfs_context *nfs);
  87
  88 /*
  89  * Used if you need different credentials than the default for the current user.
  90  */
  91 struct AUTH;
  92 EXTERN void nfs_set_auth(struct nfs_context *nfs, struct AUTH *auth);
  93
  94 /*
  95  * When an operation failed, this function can extract a detailed error string.
  96  */
  97 EXTERN char *nfs_get_error(struct nfs_context *nfs);
  98
  99
 100 /*
 101  * Callback for all ASYNC nfs functions
 102  */
 103 typedef void (*nfs_cb)(int err, struct nfs_context *nfs, void *data, void *private_data);
 104
 105 /*
 106  * Callback for all ASYNC rpc functions
 107  */
 108 typedef void (*rpc_cb)(struct rpc_context *rpc, int status, void *data, void *private_data);
 109
 110
 111
 112 /*
 113  * NFS CONTEXT.
 114  */
 115 /*
 116  * Create an NFS c, the context.
 117  * Function returns
 118  *  NULL : Failed to create a context.
 119  *  *nfs : A pointer to an nfs context.
 120  */
 121 EXTERN struct nfs_context *nfs_init_context(void);
 122 /*
 123  * Destroy an nfs context.
 124  */
 125 EXTERN void nfs_destroy_context(struct nfs_context *nfs);
 126
 127
 128 /*
 129  * URL parsing functions.
 130  * These functions all parse a URL of the form
 131  * nfs://server/path/file?argv=val[&arg=val]*
 132  * and returns a nfs_url.
 133  *
 134  * Apart from parsing the URL the functions will also update
 135  * the nfs context to reflect settings controlled via url arguments.
 136  *
 137  * Current URL arguments are :
 138  * tcp-syncnt=<int>  : Number of SYNs to send during the seccion establish
 139  *                     before failing settin up the tcp connection to the
 140  *                     server.
 141  * uid=<int>         : UID value to use when talking to the server.
 142  *                     default it 65534 on Windows and getuid() on unixen.
 143  * gid=<int>         : GID value to use when talking to the server.
 144  *                     default it 65534 on Windows and getgid() on unixen.
 145  */
 146 /*
 147  * Parse a complete NFS URL including, server, path and
 148  * filename. Fail if any component is missing.
 149  */
 150 EXTERN struct nfs_url *nfs_parse_url_full(struct nfs_context *nfs, const char *url);
 151
 152 /*
 153  * Parse an NFS URL, but do not split path and file. File
 154  * in the resulting struct remains NULL.
 155  */
 156 EXTERN struct nfs_url *nfs_parse_url_dir(struct nfs_context *nfs, const char *url);
 157
 158 /*
 159  * Parse an NFS URL, but do not fail if file, path or even server is missing.
 160  * Check elements of the resulting struct for NULL.
 161  */
 162 EXTERN struct nfs_url *nfs_parse_url_incomplete(struct nfs_context *nfs, const char *url);
 163
 164
 165 /*
 166  * Free the URL struct returned by the nfs_parse_url_* functions.
 167  */
 168 EXTERN void nfs_destroy_url(struct nfs_url *url);
 169
 170
 171 struct nfsfh;
 172
 173 /*
 174  * Get the maximum supported READ3 size by the server
 175  */
 176 EXTERN uint64_t nfs_get_readmax(struct nfs_context *nfs);
 177
 178 /*
 179  * Get the maximum supported WRITE3 size by the server
 180  */
 181 EXTERN uint64_t nfs_get_writemax(struct nfs_context *nfs);
 182
 183 /*
 184  *  MODIFY CONNECT PARAMTERS
 185  */
 186
 187 EXTERN void nfs_set_tcp_syncnt(struct nfs_context *nfs, int v);
 188 EXTERN void nfs_set_uid(struct nfs_context *nfs, int uid);
 189 EXTERN void nfs_set_gid(struct nfs_context *nfs, int gid);
 190 EXTERN void nfs_set_readahead(struct nfs_context *nfs, uint32_t v);
 191
 192 /*
 193  * MOUNT THE EXPORT
 194  */
 195 /*
 196  * Async nfs mount.
 197  * Function returns
 198  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 199  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 200  *
 201  * When the callback is invoked, status indicates the result:
 202  *      0 : Success.
 203  *          data is NULL
 204  * -errno : An error occured.
 205  *          data is the error string.
 206  */
 207 EXTERN int nfs_mount_async(struct nfs_context *nfs, const char *server, const char *exportname, nfs_cb cb, void *private_data);
 208 /*
 209  * Sync nfs mount.
 210  * Function returns
 211  *      0 : The operation was successfull.
 212  * -errno : The command failed.
 213  */
 214 EXTERN int nfs_mount(struct nfs_context *nfs, const char *server, const char *exportname);
 215
 216
 217
 218
 219 /*
 220  * STAT()
 221  */
 222 /*
 223  * Async stat(<filename>)
 224  * Function returns
 225  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 226  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 227  *
 228  * When the callback is invoked, status indicates the result:
 229  *      0 : Success.
 230  *          data is struct stat *
 231  * -errno : An error occured.
 232  *          data is the error string.
 233  */
 234 /* This function is deprecated. Use nfs_stat64_async() instead */
 235 struct stat;
 236 EXTERN int nfs_stat_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data);
 237 /*
 238  * Sync stat(<filename>)
 239  * Function returns
 240  *      0 : The operation was successfull.
 241  * -errno : The command failed.
 242  */
 243 /* This function is deprecated. Use nfs_stat64() instead */
 244 #ifdef WIN32
 245 EXTERN int nfs_stat(struct nfs_context *nfs, const char *path, struct __stat64 *st);
 246 #else
 247 EXTERN int nfs_stat(struct nfs_context *nfs, const char *path, struct stat *st);
 248 #endif
 249
 250
 251 /* nfs_stat64
 252  * 64 bit version if stat. All fields are always 64bit.
 253  * Use these functions instead of nfs_stat[_async](), especially if you
 254  * have weird stat structures.
 255  */
 256 /*
 257  * STAT()
 258  */
 259 struct nfs_stat_64 {
 260         uint64_t nfs_dev;
 261         uint64_t nfs_ino;
 262         uint64_t nfs_mode;
 263         uint64_t nfs_nlink;
 264         uint64_t nfs_uid;
 265         uint64_t nfs_gid;
 266         uint64_t nfs_rdev;
 267         uint64_t nfs_size;
 268         uint64_t nfs_blksize;
 269         uint64_t nfs_blocks;
 270         uint64_t nfs_atime;
 271         uint64_t nfs_mtime;
 272         uint64_t nfs_ctime;
 273 };
 274
 275 /*
 276  * Async stat(<filename>)
 277  * Function returns
 278  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 279  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 280  *
 281  * When the callback is invoked, status indicates the result:
 282  *      0 : Success.
 283  *          data is struct nfs_stat_64 *
 284  * -errno : An error occured.
 285  *          data is the error string.
 286  */
 287 EXTERN int nfs_stat64_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data);
 288 /*
 289  * Sync stat(<filename>)
 290  * Function returns
 291  *      0 : The operation was successfull.
 292  * -errno : The command failed.
 293  */
 294 EXTERN int nfs_stat64(struct nfs_context *nfs, const char *path, struct nfs_stat_64 *st);
 295
 296 /*
 297  * FSTAT()
 298  */
 299 /*
 300  * Async fstat(nfsfh *)
 301  * Function returns
 302  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 303  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 304  *
 305  * When the callback is invoked, status indicates the result:
 306  *      0 : Success.
 307  *          data is struct stat *
 308  * -errno : An error occured.
 309  *          data is the error string.
 310  */
 311 EXTERN int nfs_fstat_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data);
 312 /*
 313  * Sync fstat(nfsfh *)
 314  * Function returns
 315  *      0 : The operation was successfull.
 316  * -errno : The command failed.
 317  */
 318 #ifdef WIN32
 319 EXTERN int nfs_fstat(struct nfs_context *nfs, struct nfsfh *nfsfh, struct __stat64 *st);
 320 #else
 321 EXTERN int nfs_fstat(struct nfs_context *nfs, struct nfsfh *nfsfh, struct stat *st);
 322 #endif
 323
 324
 325
 326 /*
 327  * OPEN()
 328  */
 329 /*
 330  * Async open(<filename>)
 331  *
 332  * mode is a combination of the flags :
 333  * O_RDOLNY, O_WRONLY, O_RDWR , O_SYNC, O_APPEND
 334  *
 335  * Function returns
 336  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 337  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 338  *
 339  * Supported flags are
 340  * O_APPEND
 341  * O_RDONLY
 342  * O_WRONLY
 343  * O_RDWR
 344  * O_TRUNC (Only valid with O_RDWR or O_WRONLY. Ignored otherwise.)
 345  *
 346  * When the callback is invoked, status indicates the result:
 347  *      0 : Success.
 348  *          data is a struct *nfsfh;
 349  *          The nfsfh is close using nfs_close().
 350  * -errno : An error occured.
 351  *          data is the error string.
 352  */
 353 EXTERN int nfs_open_async(struct nfs_context *nfs, const char *path, int flags, nfs_cb cb, void *private_data);
 354 /*
 355  * Sync open(<filename>)
 356  * Function returns
 357  *      0 : The operation was successfull. *nfsfh is filled in.
 358  * -errno : The command failed.
 359  */
 360 EXTERN int nfs_open(struct nfs_context *nfs, const char *path, int flags, struct nfsfh **nfsfh);
 361
 362
 363
 364
 365 /*
 366  * CLOSE
 367  */
 368 /*
 369  * Async close(nfsfh)
 370  *
 371  * Function returns
 372  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 373  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 374  *
 375  * When the callback is invoked, status indicates the result:
 376  *      0 : Success.
 377  *          data is NULL.
 378  * -errno : An error occured.
 379  *          data is the error string.
 380  */
 381 EXTERN int nfs_close_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data);
 382 /*
 383  * Sync close(nfsfh)
 384  * Function returns
 385  *      0 : The operation was successfull.
 386  * -errno : The command failed.
 387  */
 388 EXTERN int nfs_close(struct nfs_context *nfs, struct nfsfh *nfsfh);
 389
 390
 391 /*
 392  * PREAD()
 393  */
 394 /*
 395  * Async pread()
 396  *
 397  * Function returns
 398  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 399  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 400  *
 401  * When the callback is invoked, status indicates the result:
 402  *    >=0 : Success.
 403  *          status is numer of bytes read.
 404  *          data is a pointer to the returned data.
 405  * -errno : An error occured.
 406  *          data is the error string.
 407  */
 408 EXTERN int nfs_pread_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, uint64_t count, nfs_cb cb, void *private_data);
 409 /*
 410  * Sync pread()
 411  * Function returns
 412  *    >=0 : numer of bytes read.
 413  * -errno : An error occured.
 414  */
 415 EXTERN int nfs_pread(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, uint64_t count, char *buf);
 416
 417
 418
 419 /*
 420  * READ()
 421  */
 422 /*
 423  * Async read()
 424  *
 425  * Function returns
 426  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 427  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 428  *
 429  * When the callback is invoked, status indicates the result:
 430  *    >=0 : Success.
 431  *          status is numer of bytes read.
 432  *          data is a pointer to the returned data.
 433  * -errno : An error occured.
 434  *          data is the error string.
 435  */
 436 EXTERN int nfs_read_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t count, nfs_cb cb, void *private_data);
 437 /*
 438  * Sync read()
 439  * Function returns
 440  *    >=0 : numer of bytes read.
 441  * -errno : An error occured.
 442  */
 443 EXTERN int nfs_read(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t count, char *buf);
 444
 445
 446
 447
 448 /*
 449  * PWRITE()
 450  */
 451 /*
 452  * Async pwrite()
 453  *
 454  * Function returns
 455  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 456  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 457  *
 458  * When the callback is invoked, status indicates the result:
 459  *    >=0 : Success.
 460  *          status is numer of bytes written.
 461  * -errno : An error occured.
 462  *          data is the error string.
 463  */
 464 EXTERN 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);
 465 /*
 466  * Sync pwrite()
 467  * Function returns
 468  *    >=0 : numer of bytes written.
 469  * -errno : An error occured.
 470  */
 471 EXTERN int nfs_pwrite(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, uint64_t count, char *buf);
 472
 473
 474 /*
 475  * WRITE()
 476  */
 477 /*
 478  * Async write()
 479  *
 480  * Function returns
 481  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 482  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 483  *
 484  * When the callback is invoked, status indicates the result:
 485  *    >=0 : Success.
 486  *          status is numer of bytes written.
 487  * -errno : An error occured.
 488  *          data is the error string.
 489  */
 490 EXTERN int nfs_write_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t count, char *buf, nfs_cb cb, void *private_data);
 491 /*
 492  * Sync write()
 493  * Function returns
 494  *    >=0 : numer of bytes written.
 495  * -errno : An error occured.
 496  */
 497 EXTERN int nfs_write(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t count, char *buf);
 498
 499
 500 /*
 501  * LSEEK()
 502  */
 503 /*
 504  * Async lseek()
 505  *
 506  * Function returns
 507  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 508  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 509  *
 510  * When the callback is invoked, status indicates the result:
 511  *    >=0 : Success.
 512  *          data is uint64_t * for the current position.
 513  * -errno : An error occured.
 514  *          data is the error string.
 515  */
 516 EXTERN int nfs_lseek_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int64_t offset, int whence, nfs_cb cb, void *private_data);
 517 /*
 518  * Sync lseek()
 519  * Function returns
 520  *    >=0 : numer of bytes read.
 521  * -errno : An error occured.
 522  */
 523 EXTERN int nfs_lseek(struct nfs_context *nfs, struct nfsfh *nfsfh, int64_t offset, int whence, uint64_t *current_offset);
 524
 525
 526 /*
 527  * FSYNC()
 528  */
 529 /*
 530  * Async fsync()
 531  *
 532  * Function returns
 533  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 534  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 535  *
 536  * When the callback is invoked, status indicates the result:
 537  *      0 : Success.
 538  * -errno : An error occured.
 539  *          data is the error string.
 540  */
 541 EXTERN int nfs_fsync_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data);
 542 /*
 543  * Sync fsync()
 544  * Function returns
 545  *      0 : Success
 546  * -errno : An error occured.
 547  */
 548 EXTERN int nfs_fsync(struct nfs_context *nfs, struct nfsfh *nfsfh);
 549
 550
 551
 552 /*
 553  * TRUNCATE()
 554  */
 555 /*
 556  * Async truncate()
 557  *
 558  * Function returns
 559  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 560  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 561  *
 562  * When the callback is invoked, status indicates the result:
 563  *      0 : Success.
 564  * -errno : An error occured.
 565  *          data is the error string.
 566  */
 567 EXTERN int nfs_truncate_async(struct nfs_context *nfs, const char *path, uint64_t length, nfs_cb cb, void *private_data);
 568 /*
 569  * Sync truncate()
 570  * Function returns
 571  *      0 : Success
 572  * -errno : An error occured.
 573  */
 574 EXTERN int nfs_truncate(struct nfs_context *nfs, const char *path, uint64_t length);
 575
 576
 577
 578 /*
 579  * FTRUNCATE()
 580  */
 581 /*
 582  * Async ftruncate()
 583  *
 584  * Function returns
 585  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 586  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 587  *
 588  * When the callback is invoked, status indicates the result:
 589  *      0 : Success.
 590  * -errno : An error occured.
 591  *          data is the error string.
 592  */
 593 EXTERN int nfs_ftruncate_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t length, nfs_cb cb, void *private_data);
 594 /*
 595  * Sync ftruncate()
 596  * Function returns
 597  *      0 : Success
 598  * -errno : An error occured.
 599  */
 600 EXTERN int nfs_ftruncate(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t length);
 601
 602
 603
 604
 605
 606
 607 /*
 608  * MKDIR()
 609  */
 610 /*
 611  * Async mkdir()
 612  *
 613  * Function returns
 614  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 615  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 616  *
 617  * When the callback is invoked, status indicates the result:
 618  *      0 : Success.
 619  * -errno : An error occured.
 620  *          data is the error string.
 621  */
 622 EXTERN int nfs_mkdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data);
 623 /*
 624  * Sync mkdir()
 625  * Function returns
 626  *      0 : Success
 627  * -errno : An error occured.
 628  */
 629 EXTERN int nfs_mkdir(struct nfs_context *nfs, const char *path);
 630
 631
 632
 633 /*
 634  * RMDIR()
 635  */
 636 /*
 637  * Async rmdir()
 638  *
 639  * Function returns
 640  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 641  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 642  *
 643  * When the callback is invoked, status indicates the result:
 644  *      0 : Success.
 645  * -errno : An error occured.
 646  *          data is the error string.
 647  */
 648 EXTERN int nfs_rmdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data);
 649 /*
 650  * Sync rmdir()
 651  * Function returns
 652  *      0 : Success
 653  * -errno : An error occured.
 654  */
 655 EXTERN int nfs_rmdir(struct nfs_context *nfs, const char *path);
 656
 657
 658
 659
 660 /*
 661  * CREAT()
 662  */
 663 /*
 664  * Async creat()
 665  *
 666  * Function returns
 667  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 668  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 669  *
 670  * When the callback is invoked, status indicates the result:
 671  *      0 : Success.
 672  *          data is a struct *nfsfh;
 673  * -errno : An error occured.
 674  *          data is the error string.
 675  */
 676 EXTERN int nfs_creat_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data);
 677 /*
 678  * Sync creat()
 679  * Function returns
 680  *      0 : Success
 681  * -errno : An error occured.
 682  */
 683 EXTERN int nfs_creat(struct nfs_context *nfs, const char *path, int mode, struct nfsfh **nfsfh);
 684
 685
 686 /*
 687  * MKNOD()
 688  */
 689 /*
 690  * Async mknod()
 691  *
 692  * Function returns
 693  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 694  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 695  *
 696  * When the callback is invoked, status indicates the result:
 697  *      0 : Success.
 698  * -errno : An error occured.
 699  *          data is the error string.
 700  */
 701 EXTERN int nfs_mknod_async(struct nfs_context *nfs, const char *path, int mode, int dev, nfs_cb cb, void *private_data);
 702 /*
 703  * Sync mknod()
 704  * Function returns
 705  *      0 : Success
 706  * -errno : An error occured.
 707  */
 708 EXTERN int nfs_mknod(struct nfs_context *nfs, const char *path, int mode, int dev);
 709
 710
 711
 712 /*
 713  * UNLINK()
 714  */
 715 /*
 716  * Async unlink()
 717  *
 718  * Function returns
 719  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 720  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 721  *
 722  * When the callback is invoked, status indicates the result:
 723  *      0 : Success.
 724  *          data is NULL
 725  * -errno : An error occured.
 726  *          data is the error string.
 727  */
 728 EXTERN int nfs_unlink_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data);
 729 /*
 730  * Sync unlink()
 731  * Function returns
 732  *      0 : Success
 733  * -errno : An error occured.
 734  */
 735 EXTERN int nfs_unlink(struct nfs_context *nfs, const char *path);
 736
 737
 738
 739
 740 /*
 741  * OPENDIR()
 742  */
 743 struct nfsdir;
 744 /*
 745  * Async opendir()
 746  *
 747  * Function returns
 748  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 749  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 750  *
 751  * When struct nfsdir * is returned, this resource is closed/freed by calling nfs_closedir()
 752  *
 753  * When the callback is invoked, status indicates the result:
 754  *      0 : Success.
 755  *          data is struct nfsdir *
 756  * -errno : An error occured.
 757  *          data is the error string.
 758  */
 759 EXTERN int nfs_opendir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data);
 760 /*
 761  * Sync opendir()
 762  * Function returns
 763  *      0 : Success
 764  * -errno : An error occured.
 765  */
 766 EXTERN int nfs_opendir(struct nfs_context *nfs, const char *path, struct nfsdir **nfsdir);
 767
 768
 769
 770 /*
 771  * READDIR()
 772  */
 773 struct nfsdirent  {
 774        struct nfsdirent *next;
 775        char *name;
 776        uint64_t inode;
 777
 778        /* Some extra fields we get for free through the READDIRPLUS3 call.
 779           You need libnfs-raw-nfs.h for type/mode constants */
 780        uint32_t type; /* NF3REG, NF3DIR, NF3BLK, ... */
 781        uint32_t mode;
 782        uint64_t size;
 783        struct timeval atime;
 784        struct timeval mtime;
 785        struct timeval ctime;
 786        uint32_t uid;
 787        uint32_t gid;
 788        uint32_t nlink;
 789 };
 790 /*
 791  * nfs_readdir() never blocks, so no special sync/async versions are available
 792  */
 793 EXTERN struct nfsdirent *nfs_readdir(struct nfs_context *nfs, struct nfsdir *nfsdir);
 794
 795
 796
 797 /*
 798  * CLOSEDIR()
 799  */
 800 /*
 801  * nfs_closedir() never blocks, so no special sync/async versions are available
 802  */
 803 EXTERN void nfs_closedir(struct nfs_context *nfs, struct nfsdir *nfsdir);
 804
 805
 806 /*
 807  * CHDIR()
 808  */
 809 /*
 810  * Async chdir(<path>)
 811  *
 812  * Function returns
 813  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 814  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 815  *
 816  * When the callback is invoked, status indicates the result:
 817  *      0 : Success.
 818  *          data is NULL;
 819  * -errno : An error occured.
 820  *          data is the error string.
 821  */
 822 EXTERN int nfs_chdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data);
 823 /*
 824  * Sync chdir(<path>)
 825  * Function returns
 826  *      0 : The operation was successfull.
 827  * -errno : The command failed.
 828  */
 829 EXTERN int nfs_chdir(struct nfs_context *nfs, const char *path);
 830
 831 /*
 832  * GETCWD()
 833  */
 834 /*
 835  * nfs_getcwd() never blocks, so no special sync/async versions are available
 836  */
 837 /*
 838  * Sync getcwd()
 839  * This function returns a pointer to the current working directory.
 840  * This pointer is only stable until the next [f]chdir or when the
 841  * context is destroyed.
 842  *
 843  * Function returns
 844  *      0 : The operation was successfull and *cwd is filled in.
 845  * -errno : The command failed.
 846  */
 847 EXTERN void nfs_getcwd(struct nfs_context *nfs, const char **cwd);
 848
 849
 850 /*
 851  * STATVFS()
 852  */
 853 /*
 854  * Async statvfs(<dirname>)
 855  * Function returns
 856  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 857  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 858  *
 859  * When the callback is invoked, status indicates the result:
 860  *      0 : Success.
 861  *          data is struct statvfs *
 862  * -errno : An error occured.
 863  *          data is the error string.
 864  */
 865 struct statvfs;
 866 EXTERN int nfs_statvfs_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data);
 867 /*
 868  * Sync statvfs(<dirname>)
 869  * Function returns
 870  *      0 : The operation was successfull.
 871  * -errno : The command failed.
 872  */
 873 EXTERN int nfs_statvfs(struct nfs_context *nfs, const char *path, struct statvfs *svfs);
 874
 875
 876 /*
 877  * READLINK()
 878  */
 879 /*
 880  * Async readlink(<name>)
 881  * Function returns
 882  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 883  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 884  *
 885  * When the callback is invoked, status indicates the result:
 886  *      0 : Success.
 887  *          data is a char *
 888  *          data is only valid during the callback and is automatically freed when the callback returns.
 889  * -errno : An error occured.
 890  *          data is the error string.
 891  */
 892 struct statvfs;
 893 EXTERN int nfs_readlink_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data);
 894 /*
 895  * Sync readlink(<name>)
 896  * Function returns
 897  *      0 : The operation was successfull.
 898  * -errno : The command failed.
 899  */
 900 EXTERN int nfs_readlink(struct nfs_context *nfs, const char *path, char *buf, int bufsize);
 901
 902
 903
 904 /*
 905  * CHMOD()
 906  */
 907 /*
 908  * Async chmod(<name>)
 909  * Function returns
 910  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 911  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 912  *
 913  * When the callback is invoked, status indicates the result:
 914  *      0 : Success.
 915  *          data is NULL
 916  * -errno : An error occured.
 917  *          data is the error string.
 918  */
 919 EXTERN int nfs_chmod_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data);
 920 /*
 921  * Sync chmod(<name>)
 922  * Function returns
 923  *      0 : The operation was successfull.
 924  * -errno : The command failed.
 925  */
 926 EXTERN int nfs_chmod(struct nfs_context *nfs, const char *path, int mode);
 927
 928
 929
 930 /*
 931  * FCHMOD()
 932  */
 933 /*
 934  * Async fchmod(<handle>)
 935  * Function returns
 936  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 937  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 938  *
 939  * When the callback is invoked, status indicates the result:
 940  *      0 : Success.
 941  *          data is NULL
 942  * -errno : An error occured.
 943  *          data is the error string.
 944  */
 945 EXTERN int nfs_fchmod_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int mode, nfs_cb cb, void *private_data);
 946 /*
 947  * Sync fchmod(<handle>)
 948  * Function returns
 949  *      0 : The operation was successfull.
 950  * -errno : The command failed.
 951  */
 952 EXTERN int nfs_fchmod(struct nfs_context *nfs, struct nfsfh *nfsfh, int mode);
 953
 954
 955
 956 /*
 957  * CHOWN()
 958  */
 959 /*
 960  * Async chown(<name>)
 961  * Function returns
 962  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 963  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 964  *
 965  * When the callback is invoked, status indicates the result:
 966  *      0 : Success.
 967  *          data is NULL
 968  * -errno : An error occured.
 969  *          data is the error string.
 970  */
 971 EXTERN int nfs_chown_async(struct nfs_context *nfs, const char *path, int uid, int gid, nfs_cb cb, void *private_data);
 972 /*
 973  * Sync chown(<name>)
 974  * Function returns
 975  *      0 : The operation was successfull.
 976  * -errno : The command failed.
 977  */
 978 EXTERN int nfs_chown(struct nfs_context *nfs, const char *path, int uid, int gid);
 979
 980
 981
 982 /*
 983  * FCHOWN()
 984  */
 985 /*
 986  * Async fchown(<handle>)
 987  * Function returns
 988  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
 989  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
 990  *
 991  * When the callback is invoked, status indicates the result:
 992  *      0 : Success.
 993  *          data is NULL
 994  * -errno : An error occured.
 995  *          data is the error string.
 996  */
 997 EXTERN int nfs_fchown_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int uid, int gid, nfs_cb cb, void *private_data);
 998 /*
 999  * Sync fchown(<handle>)
1000  * Function returns
1001  *      0 : The operation was successfull.
1002  * -errno : The command failed.
1003  */
1004 EXTERN int nfs_fchown(struct nfs_context *nfs, struct nfsfh *nfsfh, int uid, int gid);
1005
1006
1007
1008
1009 /*
1010  * UTIMES()
1011  */
1012 /*
1013  * Async utimes(<path>)
1014  * Function returns
1015  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
1016  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
1017  *
1018  * When the callback is invoked, status indicates the result:
1019  *      0 : Success.
1020  *          data is NULL
1021  * -errno : An error occured.
1022  *          data is the error string.
1023  */
1024 EXTERN int nfs_utimes_async(struct nfs_context *nfs, const char *path, struct timeval *times, nfs_cb cb, void *private_data);
1025 /*
1026  * Sync utimes(<path>)
1027  * Function returns
1028  *      0 : The operation was successfull.
1029  * -errno : The command failed.
1030  */
1031 EXTERN int nfs_utimes(struct nfs_context *nfs, const char *path, struct timeval *times);
1032
1033
1034 /*
1035  * UTIME()
1036  */
1037 /*
1038  * Async utime(<path>)
1039  * Function returns
1040  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
1041  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
1042  *
1043  * When the callback is invoked, status indicates the result:
1044  *      0 : Success.
1045  *          data is NULL
1046  * -errno : An error occured.
1047  *          data is the error string.
1048  */
1049 struct utimbuf;
1050 EXTERN int nfs_utime_async(struct nfs_context *nfs, const char *path, struct utimbuf *times, nfs_cb cb, void *private_data);
1051 /*
1052  * Sync utime(<path>)
1053  * Function returns
1054  *      0 : The operation was successfull.
1055  * -errno : The command failed.
1056  */
1057 EXTERN int nfs_utime(struct nfs_context *nfs, const char *path, struct utimbuf *times);
1058
1059
1060
1061
1062 /*
1063  * ACCESS()
1064  */
1065 /*
1066  * Async access(<path>)
1067  * Function returns
1068  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
1069  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
1070  *
1071  * When the callback is invoked, status indicates the result:
1072  *      0 : Success.
1073  *          data is NULL
1074  * -errno : An error occured.
1075  *          data is the error string.
1076  */
1077 EXTERN int nfs_access_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data);
1078 /*
1079  * Sync access(<path>)
1080  * Function returns
1081  *      0 : The operation was successfull.
1082  * -errno : The command failed.
1083  */
1084 EXTERN int nfs_access(struct nfs_context *nfs, const char *path, int mode);
1085
1086
1087
1088
1089 /*
1090  * SYMLINK()
1091  */
1092 /*
1093  * Async symlink(<path>)
1094  * Function returns
1095  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
1096  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
1097  *
1098  * When the callback is invoked, status indicates the result:
1099  *      0 : Success.
1100  *          data is NULL
1101  * -errno : An error occured.
1102  *          data is the error string.
1103  */
1104 EXTERN int nfs_symlink_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data);
1105 /*
1106  * Sync symlink(<path>)
1107  * Function returns
1108  *      0 : The operation was successfull.
1109  * -errno : The command failed.
1110  */
1111 EXTERN int nfs_symlink(struct nfs_context *nfs, const char *oldpath, const char *newpath);
1112
1113
1114 /*
1115  * RENAME()
1116  */
1117 /*
1118  * Async rename(<oldpath>, <newpath>)
1119  * Function returns
1120  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
1121  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
1122  *
1123  * When the callback is invoked, status indicates the result:
1124  *      0 : Success.
1125  *          data is NULL
1126  * -errno : An error occured.
1127  *          data is the error string.
1128  */
1129 EXTERN int nfs_rename_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data);
1130 /*
1131  * Sync rename(<oldpath>, <newpath>)
1132  * Function returns
1133  *      0 : The operation was successfull.
1134  * -errno : The command failed.
1135  */
1136 EXTERN int nfs_rename(struct nfs_context *nfs, const char *oldpath, const char *newpath);
1137
1138
1139
1140 /*
1141  * LINK()
1142  */
1143 /*
1144  * Async link(<oldpath>, <newpath>)
1145  * Function returns
1146  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
1147  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
1148  *
1149  * When the callback is invoked, status indicates the result:
1150  *      0 : Success.
1151  *          data is NULL
1152  * -errno : An error occured.
1153  *          data is the error string.
1154  */
1155 EXTERN int nfs_link_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data);
1156 /*
1157  * Sync link(<oldpath>, <newpath>)
1158  * Function returns
1159  *      0 : The operation was successfull.
1160  * -errno : The command failed.
1161  */
1162 EXTERN int nfs_link(struct nfs_context *nfs, const char *oldpath, const char *newpath);
1163
1164
1165 /*
1166  * GETEXPORTS()
1167  */
1168 /*
1169  * Async getexports()
1170  * NOTE: You must include 'libnfs-raw-mount.h' to get the definitions of the
1171  * returned structures.
1172  *
1173  * This function will return the list of exports from an NFS server.
1174  *
1175  * Function returns
1176  *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
1177  * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
1178  *
1179  * When the callback is invoked, status indicates the result:
1180  *      0 : Success.
1181  *          data is a pointer to an exports pointer:
1182  *          exports export = *(exports *)data;
1183  * -errno : An error occured.
1184  *          data is the error string.
1185  */
1186 EXTERN int mount_getexports_async(struct rpc_context *rpc, const char *server, rpc_cb cb, void *private_data);
1187 /*
1188  * Sync getexports(<server>)
1189  * Function returns
1190  *            NULL : something failed
1191  *  exports export : a linked list of exported directories
1192  *
1193  * returned data must be freed by calling mount_free_export_list(exportnode);
1194  */
1195 EXTERN struct exportnode *mount_getexports(const char *server);
1196
1197 EXTERN void mount_free_export_list(struct exportnode *exports);
1198
1199
1200 //qqq replace later with lseek(cur, 0)
1201 uint64_t nfs_get_current_offset(struct nfsfh *nfsfh);
1202
1203
1204
1205
1206
1207 struct nfs_server_list {
1208        struct nfs_server_list *next;
1209        char *addr;
1210 };
1211
1212 /*
1213  * Sync find_local_servers(<server>)
1214  * This function will probe all local networks for NFS server. This function will
1215  * block for one second while awaiting for all nfs servers to respond.
1216  *
1217  * Function returns
1218  * NULL : something failed
1219  *
1220  * struct nfs_server_list : a linked list of all discovered servers
1221  *
1222  * returned data must be freed by nfs_free_srvr_list(srv);
1223  */
1224 struct nfs_server_list *nfs_find_local_servers(void);
1225 void free_nfs_srvr_list(struct nfs_server_list *srv);
1226
1227 #ifdef __cplusplus
1228 }
1229 #endif
1230
1231 #endif /* !_LIBNFS_H_ */