source3/include/vfs.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3    VFS structures and parameters
   4    Copyright (C) Jeremy Allison                         1999-2005
   5    Copyright (C) Tim Potter                             1999
   6    Copyright (C) Alexander Bokovoy                      2002-2005
   7    Copyright (C) Stefan (metze) Metzmacher              2003
   8    Copyright (C) Volker Lendecke                        2009
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22
  23    This work was sponsored by Optifacio Software Services, Inc.
  24 */
  25
  26 #ifndef _VFS_H
  27 #define _VFS_H
  28
  29 /* Avoid conflict with an AIX include file */
  30
  31 #ifdef vfs_ops
  32 #undef vfs_ops
  33 #endif
  34
  35 /*
  36  * As we're now (thanks Andrew ! :-) using file_structs and connection
  37  * structs in the vfs - then anyone writing a vfs must include includes.h...
  38  */
  39
  40 /*
  41  * This next constant specifies the version number of the VFS interface
  42  * this smbd will load. Increment this if *ANY* changes are made to the
  43  * vfs_ops below. JRA.
  44  *
  45  * If you change anything here, please also update modules/vfs_full_audit.c.
  46  * VL.
  47  */
  48
  49 /* Changed to version 2 for CIFS UNIX extensions (mknod and link added). JRA. */
  50 /* Changed to version 3 for POSIX acl extensions. JRA. */
  51 /* Changed to version 4 for cascaded VFS interface. Alexander Bokovoy. */
  52 /* Changed to version 5 for sendfile addition. JRA. */
  53 /* Changed to version 6 for the new module system, fixed cascading and quota functions. --metze */
  54 /* Changed to version 7 to include the get_nt_acl info parameter. JRA. */
  55 /* Changed to version 8 includes EA calls. JRA. */
  56 /* Changed to version 9 to include the get_shadow_data call. --metze */
  57 /* Changed to version 10 to include pread/pwrite calls. */
  58 /* Changed to version 11 to include seekdir/telldir/rewinddir calls. JRA */
  59 /* Changed to version 12 to add mask and attributes to opendir(). JRA
  60    Also include aio calls. JRA. */
  61 /* Changed to version 13 as the internal structure of files_struct has changed. JRA */
  62 /* Changed to version 14 as we had to change DIR to SMB_STRUCT_DIR. JRA */
  63 /* Changed to version 15 as we added the statvfs call. JRA */
  64 /* Changed to version 16 as we added the getlock call. JRA */
  65 /* Changed to version 17 as we removed redundant connection_struct parameters. --jpeach */
  66 /* Changed to version 18 to add fsp parameter to the open call -- jpeach
  67    Also include kernel_flock call - jmcd */
  68 /* Changed to version 19, kernel change notify has been merged
  69    Also included linux setlease call - jmcd */
  70 /* Changed to version 20, use ntimes call instead of utime (greater
  71  * timestamp resolition. JRA. */
  72 /* Changed to version21 to add chflags operation -- jpeach */
  73 /* Changed to version22 to add lchown operation -- jra */
  74 /* Leave at 22 - not yet released. But change set_nt_acl to return an NTSTATUS. jra. */
  75 /* Leave at 22 - not yet released. Add file_id_create operation. --metze */
  76 /* Leave at 22 - not yet released. Change all BOOL parameters (int) to bool. jra. */
  77 /* Leave at 22 - not yet released. Added recvfile. */
  78 /* Leave at 22 - not yet released. Change get_nt_acl to return NTSTATUS - vl */
  79 /* Leave at 22 - not yet released. Change get_nt_acl to *not* take a
  80  * files_struct. - obnox.*/
  81 /* Leave at 22 - not yet released. Remove parameter fd from fget_nt_acl. - obnox */
  82 /* Leave at 22 - not yet released. Remove parameter fd from gset_nt_acl. - obnox */
  83 /* Leave at 22 - not yet released. Remove parameter fd from pread. - obnox */
  84 /* Leave at 22 - not yet released. Remove parameter fd from pwrite. - obnox */
  85 /* Leave at 22 - not yet released. Remove parameter fd from lseek. - obnox */
  86 /* Leave at 22 - not yet released. Remove parameter fd from fsync. - obnox */
  87 /* Leave at 22 - not yet released. Remove parameter fd from fstat. - obnox */
  88 /* Leave at 22 - not yet released. Remove parameter fd from fchmod. - obnox */
  89 /* Leave at 22 - not yet released. Remove parameter fd from fchown. - obnox */
  90 /* Leave at 22 - not yet released. Remove parameter fd from ftruncate. - obnox */
  91 /* Leave at 22 - not yet released. Remove parameter fd from lock. - obnox */
  92 /* Leave at 22 - not yet released. Remove parameter fd from kernel_flock. - obnox */
  93 /* Leave at 22 - not yet released. Remove parameter fd from linux_setlease. - obnox */
  94 /* Leave at 22 - not yet released. Remove parameter fd from getlock. - obnox */
  95 /* Leave at 22 - not yet released. Remove parameter fd from sys_acl_get_fd. - obnox */
  96 /* Leave at 22 - not yet released. Remove parameter fd from fchmod_acl. - obnox */
  97 /* Leave at 22 - not yet released. Remove parameter fd from sys_acl_set_fd. - obnox */
  98 /* Leave at 22 - not yet released. Remove parameter fd from fgetxattr. - obnox */
  99 /* Leave at 22 - not yet released. Remove parameter fd from flistxattr. - obnox */
 100 /* Leave at 22 - not yet released. Remove parameter fd from fremovexattr. - obnox */
 101 /* Leave at 22 - not yet released. Remove parameter fd from fsetxattr. - obnox */
 102 /* Leave at 22 - not yet released. Remove parameter fd from aio_cancel. - obnox */
 103 /* Leave at 22 - not yet released. Remove parameter fd from read. - obnox */
 104 /* Leave at 22 - not yet released. Remove parameter fd from write. - obnox */
 105 /* Leave at 22 - not yet released. Remove parameter fromfd from sendfile. - obnox */
 106 /* Leave at 22 - not yet released. Remove parameter fromfd from recvfile. - obnox */
 107 /* Leave at 22 - not yet released. Additional change: add operations for offline files -- ab */
 108 /* Leave at 22 - not yet released. Add the streaminfo call. -- jpeach, vl */
 109 /* Leave at 22 - not yet released. Remove parameter fd from close_fn. - obnox */
 110 /* Changed to version 23 - remove set_nt_acl call. This can only be done via an
 111    open handle. JRA. */
 112 /* Changed to version 24 - make security descriptor const in fset_nt_acl. JRA. */
 113 /* Changed to version 25 - Jelmer's change from SMB_BIG_UINT to uint64_t. */
 114 /* Leave at 25 - not yet released. Add create_file call. -- tprouty. */
 115 /* Leave at 25 - not yet released. Add create time to ntimes. -- tstecher. */
 116 /* Leave at 25 - not yet released. Add get_alloc_size call. -- tprouty. */
 117 /* Leave at 25 - not yet released. Add SMB_STRUCT_STAT to readdir. - sdann */
 118 /* Leave at 25 - not yet released. Add init_search_op call. - sdann */
 119 /* Leave at 25 - not yet released. Add locking calls. -- zkirsch. */
 120 /* Leave at 25 - not yet released. Add strict locking calls. -- drichards. */
 121 /* Changed to version 26 - Plumb struct smb_filename to SMB_VFS_CREATE_FILE,
 122                            SMB_VFS_OPEN, SMB_VFS_STAT, SMB_VFS_LSTAT,
 123                            SMB_VFS_RENAME, SMB_VFS_UNLINK, SMB_VFS_NTIMES.  */
 124 /* Changed to version 27 - not yet released. Added enum timestamp_set_resolution
 125  *                         return to fs_capabilities call. JRA. */
 126 /* Leave at 27 - not yet released. Add translate_name VFS call to convert
 127                  UNIX names to Windows supported names -- asrinivasan. */
 128 /* Changed to version 28 - Add private_flags uint32_t to CREATE call. */
 129 /* Leave at 28 - not yet released. Change realpath to assume NULL and return a
 130                  malloc'ed path. JRA. */
 131 /* Leave at 28 - not yet released. Move posix_fallocate into the VFS
 132                 where it belongs. JRA. */
 133 /* Leave at 28 - not yet released. Rename posix_fallocate to fallocate
 134                 to split out the two possible uses. JRA. */
 135 /* Leave at 28 - not yet released. Add fdopendir. JRA. */
 136 /* Leave at 28 - not yet released. Rename open function to open_fn. - gd */
 137 /* Leave at 28 - not yet released. Make getwd function always return malloced memory. JRA. */
 138 /* Bump to version 29 - Samba 3.6.0 will ship with interface version 28. */
 139 /* Leave at 29 - not yet releases. Add fsctl. Richard Sharpe */
 140 /* Leave at 29 - not yet released. add SMB_VFS_GET_DFS_REFERRAL() - metze */
 141 /* Leave at 29 - not yet released. Remove l{list,get,set,remove}xattr - abartlet */
 142 /* Leave at 29 - not yet released. move to plain off_t - abartlet */
 143 /* Leave at 29 - not yet released. Remove sys_acl functions other than set and get - abartlet */
 144 /* Leave at 29 - not yet released. Added backup_intent bool to files_struct - JRA */
 145 /* Leave at 29 - not yet released. Add durable handle functions - metze/obnox */
 146 /* Leave at 29 - not yet released. Added sys_acl_blob_get_file and sys_acl_blob_get_fd */
 147 /* Bump to version 30 - Samba 4.0.0 will ship with interface version 30 */
 148 /* Leave at 30 - not yet released. Added conn->cwd to save vfs_GetWd() calls. */
 149 /* Leave at 30 - not yet released. Changed sys_acl_blob_get_file interface to remove type */
 150 /* Bump to version 31 - Samba 4.1.0 will ship with interface version 31 */
 151 /* Leave at 31 - not yet released. Make struct vuid_cache_entry in
 152                 connection_struct a pointer. */
 153 /* Leave at 31 - not yet released. Add share_access to vuid_cache_entry. */
 154 /* Leave at 31 - not yet released. add SMB_VFS_COPY_CHUNK() */
 155 /* Leave at 31 - not yet released. Remove the unused
 156                 fsp->pending_break_messages array */
 157 /* Leave at 31 - not yet released. add SMB_VFS_[GET/SET]_COMPRESSION() */
 158
 159 /* Bump to version 32 - Samba 4.2 will ship with that. */
 160 /* Version 32 - Add "lease" to CREATE_FILE operation */
 161 /* Version 32 - Add "lease" to struct files_struct */
 162 /* Version 32 - Add SMB_VFS_READDIR_ATTR() */
 163 /* Version 32 - Add in and out create context blobs to create_file */
 164 /* Version 32 - Remove unnecessary SMB_VFS_DISK_FREE() small_query parameter */
 165 /* Bump to version 33 - Samba 4.3 will ship with that. */
 166 /* Version 33 - change fallocate mode flags param from enum->uint32_t */
 167 /* Version 33 - Add snapshot create/delete calls */
 168 /* Version 33 - Add OS X SMB2 AAPL copyfile extension flag to fsp */
 169 /* Version 33 - Remove notify_watch_fn */
 170 /* Bump to version 34 - Samba 4.4 will ship with that */
 171 /* Version 34 - Remove bool posix_open, add uint64_t posix_flags */
 172 /* Version 34 - Added bool posix_pathnames to struct smb_request */
 173 /* Bump to version 35 - Samba 4.5 will ship with that */
 174 /* Version 35 - Change get_nt_acl_fn from const char *, to
 175                 const struct smb_filename * */
 176 /* Version 35 - Change mkdir from const char *, to
 177                 const struct smb_filename * */
 178 /* Version 35 - Change rmdir from const char *, to
 179                 const struct smb_filename * */
 180 /* Version 35 - Change opendir from const char *, to
 181                 const struct smb_filename * */
 182 /* Version 35 - Wrap aio async funtions args in a struct vfs_aio_state */
 183 /* Version 35 - Change chmod from const char *, to
 184                 const struct smb_filename * */
 185 /* Version 35 - Change chmod_acl from const char *, to
 186                 const struct smb_filename * */
 187 /* Version 35 - Change chown from const char *, to
 188                 const struct smb_filename * */
 189 /* Version 35 - Change lchown from const char *, to
 190                 const struct smb_filename * */
 191 /* Version 35 - Change streaminfo from const char *, to
 192                 const struct smb_filename * */
 193 /* Version 35 - Add uint32_t flags to struct smb_filename */
 194 /* Version 35 - Add get/set/fget/fset dos attribute functions. */
 195 /* Version 35 - Add bool use_ofd_locks to struct files_struct */
 196 /* Bump to version 36 - Samba 4.6 will ship with that */
 197 /* Version 36 - Remove is_offline and set_offline */
 198 /* Version 37 - Module init functions now take a TALLOC_CTX * parameter. */
 199 /* Version 37 - Add vfs_copy_chunk_flags for DUP_EXTENTS_TO_FILE */
 200 /* Version 37 - Change sys_acl_delete_def_file from const char *
 201                 to const struct smb_filename * */
 202 /* Version 37 - Change sys_acl_get_file from const char *
 203                 to const struct smb_filename * */
 204 /* Version 37 - Change sys_acl_blob_get_file from const char *
 205                 to const struct smb_filename * */
 206 /* Version 37 - Change sys_acl_set_file from const char *
 207                 to const struct smb_filename * */
 208 /* Version 37 - Change listxattr from const char *
 209                 to const struct smb_filename * */
 210 /* Version 37 - Change removexattr from const char *
 211                 to const struct smb_filename * */
 212 /* Version 37 - Change setxattr from const char *
 213                 to const struct smb_filename * */
 214 /* Version 37 - Change getxattr from const char *
 215                 to const struct smb_filename * */
 216 /* Version 37 - Change mknod from const char * to const struct smb_filename * */
 217
 218 #define SMB_VFS_INTERFACE_VERSION 37
 219
 220 /*
 221     All intercepted VFS operations must be declared as static functions inside module source
 222     in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
 223     example VFS modules for more details.
 224 */
 225
 226 /* VFS operations structure */
 227
 228 struct vfs_handle_struct;
 229 struct connection_struct;
 230 struct files_struct;
 231 struct security_descriptor;
 232 struct vfs_statvfs_struct;
 233 struct smb_request;
 234 struct ea_list;
 235 struct smb_file_time;
 236 struct blocking_lock_record;
 237 struct smb_filename;
 238 struct dfs_GetDFSReferral;
 239
 240 typedef union unid_t {
 241         uid_t uid;
 242         gid_t gid;
 243 } unid_t;
 244
 245 struct fd_handle {
 246         size_t ref_count;
 247         int fd;
 248         uint64_t position_information;
 249         off_t pos;
 250         uint32_t private_options;       /* NT Create options, but we only look at
 251                                  * NTCREATEX_OPTIONS_PRIVATE_DENY_DOS and
 252                                  * NTCREATEX_OPTIONS_PRIVATE_DENY_FCB and
 253                                  * NTCREATEX_OPTIONS_PRIVATE_DELETE_ON_CLOSE
 254                                  * for print files *only*, where
 255                                  * DELETE_ON_CLOSE is not stored in the share
 256                                  * mode database.
 257                                  */
 258         unsigned long gen_id;
 259 };
 260
 261 struct fsp_lease {
 262         size_t ref_count;
 263         struct smbd_server_connection *sconn;
 264         struct tevent_timer *timeout;
 265         struct smb2_lease lease;
 266 };
 267
 268 typedef struct files_struct {
 269         struct files_struct *next, *prev;
 270         uint64_t fnum;
 271         struct smbXsrv_open *op;
 272         struct connection_struct *conn;
 273         struct fd_handle *fh;
 274         unsigned int num_smb_operations;
 275         struct file_id file_id;
 276         uint64_t initial_allocation_size; /* Faked up initial allocation on disk. */
 277         uint16_t file_pid;
 278         uint64_t vuid; /* SMB2 compat */
 279         struct write_cache *wcp;
 280         struct timeval open_time;
 281         uint32_t access_mask;           /* NTCreateX access bits (FILE_READ_DATA etc.) */
 282         uint32_t share_access;          /* NTCreateX share constants (FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE). */
 283
 284         bool kernel_share_modes_taken;
 285
 286         bool update_write_time_triggered;
 287         struct tevent_timer *update_write_time_event;
 288         bool update_write_time_on_close;
 289         struct timespec close_write_time;
 290         bool write_time_forced;
 291
 292         int oplock_type;
 293         struct fsp_lease *lease;
 294         int sent_oplock_break;
 295         struct tevent_timer *oplock_timeout;
 296         struct lock_struct last_lock_failure;
 297         int current_lock_count; /* Count the number of outstanding locks and pending locks. */
 298
 299         bool can_lock;
 300         bool can_read;
 301         bool can_write;
 302         bool modified;
 303         bool is_directory;
 304         bool aio_write_behind;
 305         bool initial_delete_on_close; /* Only set at NTCreateX if file was created. */
 306         bool delete_on_close;
 307         uint64_t posix_flags;
 308         bool is_sparse;
 309         bool backup_intent; /* Handle was successfully opened with backup intent
 310                                 and opener has privilege to do so. */
 311         bool aapl_copyfile_supported;
 312         bool use_ofd_locks; /* Are we using open file description locks ? */
 313         struct smb_filename *fsp_name;
 314         uint32_t name_hash;             /* Jenkins hash of full pathname. */
 315         uint64_t mid;                   /* Mid of the operation that created us. */
 316
 317         struct vfs_fsp_data *vfs_extension;
 318         struct fake_file_handle *fake_file_handle;
 319
 320         struct notify_change_buf *notify;
 321
 322         struct files_struct *base_fsp; /* placeholder for delete on close */
 323
 324         /*
 325          * Read-only cached brlock record, thrown away when the
 326          * brlock.tdb seqnum changes. This avoids fetching data from
 327          * the brlock.tdb on every read/write call.
 328          */
 329         int brlock_seqnum;
 330         struct byte_range_lock *brlock_rec;
 331
 332         struct dptr_struct *dptr;
 333
 334         /* if not NULL, means this is a print file */
 335         struct print_file_data *print_file;
 336
 337         unsigned num_aio_requests;
 338         struct tevent_req **aio_requests;
 339
 340         /*
 341          * If a close request comes in while we still have aio_requests
 342          * around, we need to hold back the close. When all aio_requests are
 343          * done, the aio completion routines need tevent_wait_done() on
 344          * this. A bit ugly, but before we have close_file() fully async
 345          * possibly the simplest approach. Thanks, Jeremy for the idea.
 346          */
 347         struct tevent_req *deferred_close;
 348 } files_struct;
 349
 350 #define FSP_POSIX_FLAGS_OPEN            0x01
 351 #define FSP_POSIX_FLAGS_RENAME          0x02
 352 #define FSP_POSIX_FLAGS_PATHNAMES       0x04
 353
 354 #define FSP_POSIX_FLAGS_ALL                     \
 355         (FSP_POSIX_FLAGS_OPEN |                 \
 356          FSP_POSIX_FLAGS_PATHNAMES |            \
 357          FSP_POSIX_FLAGS_RENAME)
 358
 359 struct vuid_cache_entry {
 360         struct auth_session_info *session_info;
 361         uint64_t vuid; /* SMB2 compat */
 362         bool read_only;
 363         uint32_t share_access;
 364 };
 365
 366 struct vuid_cache {
 367         unsigned int next_entry;
 368         struct vuid_cache_entry array[VUID_CACHE_SIZE];
 369 };
 370
 371 typedef struct {
 372         char *name;
 373         bool is_wild;
 374 } name_compare_entry;
 375
 376 struct dfree_cached_info {
 377         time_t last_dfree_time;
 378         uint64_t dfree_ret;
 379         uint64_t bsize;
 380         uint64_t dfree;
 381         uint64_t dsize;
 382 };
 383
 384 struct share_params {
 385         int service;
 386 };
 387
 388 typedef struct connection_struct {
 389         struct connection_struct *next, *prev;
 390         struct smbd_server_connection *sconn; /* can be NULL */
 391         struct smbXsrv_tcon *tcon; /* can be NULL */
 392         uint32_t cnum; /* an index passed over the wire */
 393         struct share_params *params;
 394         bool force_user;
 395         struct vuid_cache *vuid_cache;
 396         bool printer;
 397         bool ipc;
 398         bool read_only; /* Attributes for the current user of the share. */
 399         uint32_t share_access;
 400         /* Does this filesystem honor
 401            sub second timestamps on files
 402            and directories when setting time ? */
 403         enum timestamp_set_resolution ts_res;
 404         char *connectpath;
 405         char *origpath;
 406         char *cwd; /* Working directory. */
 407
 408         struct vfs_handle_struct *vfs_handles;          /* for the new plugins */
 409
 410         /*
 411          * This represents the user information on this connection. Depending
 412          * on the vuid using this tid, this might change per SMB request.
 413          */
 414         struct auth_session_info *session_info;
 415
 416         /*
 417          * If the "force group" parameter is set, this is the primary gid that
 418          * may be used in the users token, depending on the vuid using this tid.
 419          */
 420         gid_t force_group_gid;
 421
 422         uint64_t vuid; /* vuid of user who *opened* this connection, or UID_FIELD_INVALID */
 423
 424         time_t lastused;
 425         time_t lastused_count;
 426         int num_files_open;
 427         unsigned int num_smb_operations; /* Count of smb operations on this tree. */
 428         int encrypt_level;
 429         bool encrypted_tid;
 430
 431         /* Semantics requested by the client or forced by the server config. */
 432         bool case_sensitive;
 433         bool case_preserve;
 434         bool short_case_preserve;
 435
 436         /* Semantics provided by the underlying filesystem. */
 437         int fs_capabilities;
 438         /* Device number of the directory of the share mount.
 439            Used to ensure unique FileIndex returns. */
 440         SMB_DEV_T base_share_dev;
 441
 442         name_compare_entry *hide_list; /* Per-share list of files to return as hidden. */
 443         name_compare_entry *veto_list; /* Per-share list of files to veto (never show). */
 444         name_compare_entry *veto_oplock_list; /* Per-share list of files to refuse oplocks on. */
 445         name_compare_entry *aio_write_behind_list; /* Per-share list of files to use aio write behind on. */
 446         struct dfree_cached_info *dfree_info;
 447         struct trans_state *pending_trans;
 448
 449         struct rpc_pipe_client *spoolss_pipe;
 450
 451 } connection_struct;
 452
 453 struct smbd_smb2_request;
 454 struct privilege_paths;
 455
 456 struct smb_request {
 457         uint8_t cmd;
 458         uint16_t flags2;
 459         uint16_t smbpid;
 460         uint64_t mid; /* For compatibility with SMB2. */
 461         uint32_t seqnum;
 462         uint64_t vuid; /* For compatibility with SMB2. */
 463         uint32_t tid;
 464         uint8_t  wct;
 465         const uint16_t *vwv;
 466         uint16_t buflen;
 467         const uint8_t *buf;
 468         const uint8_t *inbuf;
 469
 470         /*
 471          * Async handling in the main smb processing loop is directed by
 472          * outbuf: reply_xxx routines indicate sync behaviour by putting their
 473          * reply into "outbuf". If they leave it as NULL, they take care of it
 474          * themselves, possibly later.
 475          *
 476          * If async handling is wanted, the reply_xxx routine must make sure
 477          * that it talloc_move()s the smb_req somewhere else.
 478          */
 479         uint8_t *outbuf;
 480
 481         size_t unread_bytes;
 482         bool encrypted;
 483         connection_struct *conn;
 484         struct smbd_server_connection *sconn;
 485         struct smbXsrv_connection *xconn;
 486         struct smb_perfcount_data pcd;
 487
 488         /*
 489          * Chained request handling
 490          */
 491         struct files_struct *chain_fsp;
 492
 493         /*
 494          * state information for async smb handling
 495          */
 496         void *async_priv;
 497
 498         /*
 499          * Back pointer to smb2 request.
 500          */
 501         struct smbd_smb2_request *smb2req;
 502
 503         /*
 504          * Pathnames used if request done
 505          * under privilege.
 506          */
 507         struct privilege_paths *priv_paths;
 508
 509         /*
 510          * Request list for chained requests, we're part of it.
 511          */
 512         struct smb_request **chain;
 513
 514         struct timeval request_time;
 515
 516         bool posix_pathnames;
 517 };
 518
 519 /*
 520  * Info about an alternate data stream
 521  */
 522
 523 struct stream_struct {
 524         off_t size;
 525         off_t alloc_size;
 526         char *name;
 527 };
 528
 529 /* time info */
 530 struct smb_file_time {
 531         struct timespec mtime;
 532         struct timespec atime;
 533         struct timespec ctime;
 534         struct timespec create_time;
 535 };
 536
 537 /*
 538  * smb_filename
 539  */
 540 struct smb_filename {
 541         char *base_name;
 542         char *stream_name;
 543         char *original_lcomp;
 544         uint32_t flags;
 545         SMB_STRUCT_STAT st;
 546 };
 547
 548 /*
 549  * smb_filename flags. Define in terms of the FSP_POSIX_FLAGS_XX
 550  * to keep the numeric values consistent.
 551  */
 552
 553 #define SMB_FILENAME_POSIX_PATH         FSP_POSIX_FLAGS_PATHNAMES
 554
 555 #define VFS_FIND(__fn__) while (handle->fns->__fn__##_fn==NULL) { \
 556                                 handle = handle->next; \
 557                          }
 558
 559 enum vfs_translate_direction {
 560         vfs_translate_to_unix = 0,
 561         vfs_translate_to_windows
 562 };
 563
 564 enum vfs_fallocate_flags {
 565         VFS_FALLOCATE_FL_KEEP_SIZE              = 0x0001,
 566         VFS_FALLOCATE_FL_PUNCH_HOLE             = 0x0002,
 567 };
 568
 569 /*
 570  * @VFS_COPY_CHUNK_FL_MUST_CLONE: indicates that copy_chunk_send_fn() copy must
 571  *                                be handled as a COW clone, AKA reflink.
 572  * @VFS_COPY_CHUNK_FL_MASK_ALL: all valid copychunk flags.
 573  */
 574 enum vfs_copy_chunk_flags {
 575         VFS_COPY_CHUNK_FL_MUST_CLONE            = 0x0001,
 576         VFS_COPY_CHUNK_FL_IGNORE_LOCKS          = 0x0002,
 577
 578         VFS_COPY_CHUNK_FL_MASK_ALL              =
 579                                         (VFS_COPY_CHUNK_FL_MUST_CLONE
 580                                          | VFS_COPY_CHUNK_FL_IGNORE_LOCKS),
 581 };
 582
 583 struct vfs_aio_state {
 584         int error;
 585         uint64_t duration;
 586 };
 587
 588 /*
 589     Available VFS operations. These values must be in sync with vfs_ops struct
 590     (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
 591     In particular, if new operations are added to vfs_ops, appropriate constants
 592     should be added to vfs_op_type so that order of them kept same as in vfs_ops.
 593 */
 594 struct shadow_copy_data;
 595
 596 struct vfs_fn_pointers {
 597         /* Disk operations */
 598
 599         int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
 600         void (*disconnect_fn)(struct vfs_handle_struct *handle);
 601         uint64_t (*disk_free_fn)(struct vfs_handle_struct *handle, const char *path, uint64_t *bsize,
 602                               uint64_t *dfree, uint64_t *dsize);
 603         int (*get_quota_fn)(struct vfs_handle_struct *handle, const char *path,
 604                             enum SMB_QUOTA_TYPE qtype, unid_t id,
 605                             SMB_DISK_QUOTA *qt);
 606         int (*set_quota_fn)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
 607         int (*get_shadow_copy_data_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, struct shadow_copy_data *shadow_copy_data, bool labels);
 608         int (*statvfs_fn)(struct vfs_handle_struct *handle, const char *path, struct vfs_statvfs_struct *statbuf);
 609         uint32_t (*fs_capabilities_fn)(struct vfs_handle_struct *handle, enum timestamp_set_resolution *p_ts_res);
 610
 611         /*
 612          * Note: that "struct dfs_GetDFSReferral *r"
 613          * needs to be a valid TALLOC_CTX
 614          */
 615         NTSTATUS (*get_dfs_referrals_fn)(struct vfs_handle_struct *handle,
 616                                          struct dfs_GetDFSReferral *r);
 617
 618         /* Directory operations */
 619
 620         DIR *(*opendir_fn)(struct vfs_handle_struct *handle,
 621                                         const struct smb_filename *smb_fname,
 622                                         const char *mask,
 623                                         uint32_t attributes);
 624         DIR *(*fdopendir_fn)(struct vfs_handle_struct *handle, files_struct *fsp, const char *mask, uint32_t attributes);
 625         struct dirent *(*readdir_fn)(struct vfs_handle_struct *handle,
 626                                          DIR *dirp,
 627                                          SMB_STRUCT_STAT *sbuf);
 628         void (*seekdir_fn)(struct vfs_handle_struct *handle, DIR *dirp, long offset);
 629         long (*telldir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 630         void (*rewind_dir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 631         int (*mkdir_fn)(struct vfs_handle_struct *handle,
 632                         const struct smb_filename *smb_fname,
 633                         mode_t mode);
 634         int (*rmdir_fn)(struct vfs_handle_struct *handle,
 635                         const struct smb_filename *smb_fname);
 636         int (*closedir_fn)(struct vfs_handle_struct *handle, DIR *dir);
 637         void (*init_search_op_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 638
 639         /* File operations */
 640
 641         int (*open_fn)(struct vfs_handle_struct *handle,
 642                        struct smb_filename *smb_fname, files_struct *fsp,
 643                        int flags, mode_t mode);
 644         NTSTATUS (*create_file_fn)(struct vfs_handle_struct *handle,
 645                                    struct smb_request *req,
 646                                    uint16_t root_dir_fid,
 647                                    struct smb_filename *smb_fname,
 648                                    uint32_t access_mask,
 649                                    uint32_t share_access,
 650                                    uint32_t create_disposition,
 651                                    uint32_t create_options,
 652                                    uint32_t file_attributes,
 653                                    uint32_t oplock_request,
 654                                    struct smb2_lease *lease,
 655                                    uint64_t allocation_size,
 656                                    uint32_t private_flags,
 657                                    struct security_descriptor *sd,
 658                                    struct ea_list *ea_list,
 659                                    files_struct **result,
 660                                    int *pinfo,
 661                                    const struct smb2_create_blobs *in_context_blobs,
 662                                    struct smb2_create_blobs *out_context_blobs);
 663         int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 664         ssize_t (*read_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n);
 665         ssize_t (*pread_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n, off_t offset);
 666         struct tevent_req *(*pread_send_fn)(struct vfs_handle_struct *handle,
 667                                             TALLOC_CTX *mem_ctx,
 668                                             struct tevent_context *ev,
 669                                             struct files_struct *fsp,
 670                                             void *data,
 671                                             size_t n, off_t offset);
 672         ssize_t (*pread_recv_fn)(struct tevent_req *req, struct vfs_aio_state *state);
 673         ssize_t (*write_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n);
 674         ssize_t (*pwrite_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n, off_t offset);
 675         struct tevent_req *(*pwrite_send_fn)(struct vfs_handle_struct *handle,
 676                                              TALLOC_CTX *mem_ctx,
 677                                              struct tevent_context *ev,
 678                                              struct files_struct *fsp,
 679                                              const void *data,
 680                                              size_t n, off_t offset);
 681         ssize_t (*pwrite_recv_fn)(struct tevent_req *req, struct vfs_aio_state *state);
 682         off_t (*lseek_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset, int whence);
 683         ssize_t (*sendfile_fn)(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *header, off_t offset, size_t count);
 684         ssize_t (*recvfile_fn)(struct vfs_handle_struct *handle, int fromfd, files_struct *tofsp, off_t offset, size_t count);
 685         int (*rename_fn)(struct vfs_handle_struct *handle,
 686                          const struct smb_filename *smb_fname_src,
 687                          const struct smb_filename *smb_fname_dst);
 688         int (*fsync_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 689         struct tevent_req *(*fsync_send_fn)(struct vfs_handle_struct *handle,
 690                                             TALLOC_CTX *mem_ctx,
 691                                             struct tevent_context *ev,
 692                                             struct files_struct *fsp);
 693         int (*fsync_recv_fn)(struct tevent_req *req, struct vfs_aio_state *state);
 694         int (*stat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_fname);
 695         int (*fstat_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
 696         int (*lstat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_filename);
 697         uint64_t (*get_alloc_size_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_STAT *sbuf);
 698         int (*unlink_fn)(struct vfs_handle_struct *handle,
 699                          const struct smb_filename *smb_fname);
 700         int (*chmod_fn)(struct vfs_handle_struct *handle,
 701                         const struct smb_filename *smb_fname,
 702                         mode_t mode);
 703         int (*fchmod_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
 704         int (*chown_fn)(struct vfs_handle_struct *handle,
 705                         const struct smb_filename *smb_fname,
 706                         uid_t uid,
 707                         gid_t gid);
 708         int (*fchown_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, uid_t uid, gid_t gid);
 709         int (*lchown_fn)(struct vfs_handle_struct *handle,
 710                         const struct smb_filename *smb_fname,
 711                         uid_t uid,
 712                         gid_t gid);
 713         int (*chdir_fn)(struct vfs_handle_struct *handle, const char *path);
 714         char *(*getwd_fn)(struct vfs_handle_struct *handle);
 715         int (*ntimes_fn)(struct vfs_handle_struct *handle,
 716                          const struct smb_filename *smb_fname,
 717                          struct smb_file_time *ft);
 718         int (*ftruncate_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset);
 719         int (*fallocate_fn)(struct vfs_handle_struct *handle,
 720                             struct files_struct *fsp,
 721                             uint32_t mode,
 722                             off_t offset,
 723                             off_t len);
 724         bool (*lock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, off_t offset, off_t count, int type);
 725         int (*kernel_flock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp,
 726                                uint32_t share_mode, uint32_t access_mask);
 727         int (*linux_setlease_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int leasetype);
 728         bool (*getlock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid);
 729         int (*symlink_fn)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
 730         int (*readlink_fn)(struct vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz);
 731         int (*link_fn)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
 732         int (*mknod_fn)(struct vfs_handle_struct *handle,
 733                                 const struct smb_filename *smb_fname,
 734                                 mode_t mode,
 735                                 SMB_DEV_T dev);
 736         char *(*realpath_fn)(struct vfs_handle_struct *handle, const char *path);
 737         int (*chflags_fn)(struct vfs_handle_struct *handle, const char *path, unsigned int flags);
 738         struct file_id (*file_id_create_fn)(struct vfs_handle_struct *handle,
 739                                             const SMB_STRUCT_STAT *sbuf);
 740         struct tevent_req *(*copy_chunk_send_fn)(struct vfs_handle_struct *handle,
 741                                                  TALLOC_CTX *mem_ctx,
 742                                                  struct tevent_context *ev,
 743                                                  struct files_struct *src_fsp,
 744                                                  off_t src_off,
 745                                                  struct files_struct *dest_fsp,
 746                                                  off_t dest_off,
 747                                                  off_t to_copy,
 748                                                  uint32_t flags);
 749         NTSTATUS (*copy_chunk_recv_fn)(struct vfs_handle_struct *handle,
 750                                        struct tevent_req *req,
 751                                        off_t *copied);
 752         NTSTATUS (*get_compression_fn)(struct vfs_handle_struct *handle,
 753                                        TALLOC_CTX *mem_ctx,
 754                                        struct files_struct *fsp,
 755                                        struct smb_filename *smb_fname,
 756                                        uint16_t *_compression_fmt);
 757         NTSTATUS (*set_compression_fn)(struct vfs_handle_struct *handle,
 758                                        TALLOC_CTX *mem_ctx,
 759                                        struct files_struct *fsp,
 760                                        uint16_t compression_fmt);
 761         NTSTATUS (*snap_check_path_fn)(struct vfs_handle_struct *handle,
 762                                        TALLOC_CTX *mem_ctx,
 763                                        const char *service_path,
 764                                        char **base_volume);
 765         NTSTATUS (*snap_create_fn)(struct vfs_handle_struct *handle,
 766                                    TALLOC_CTX *mem_ctx,
 767                                    const char *base_volume,
 768                                    time_t *tstamp,
 769                                    bool rw,
 770                                    char **base_path,
 771                                    char **snap_path);
 772         NTSTATUS (*snap_delete_fn)(struct vfs_handle_struct *handle,
 773                                    TALLOC_CTX *mem_ctx,
 774                                    char *base_path,
 775                                    char *snap_path);
 776
 777         NTSTATUS (*streaminfo_fn)(struct vfs_handle_struct *handle,
 778                                   struct files_struct *fsp,
 779                                   const struct smb_filename *smb_fname,
 780                                   TALLOC_CTX *mem_ctx,
 781                                   unsigned int *num_streams,
 782                                   struct stream_struct **streams);
 783
 784         int (*get_real_filename_fn)(struct vfs_handle_struct *handle,
 785                                     const char *path,
 786                                     const char *name,
 787                                     TALLOC_CTX *mem_ctx,
 788                                     char **found_name);
 789
 790         const char *(*connectpath_fn)(struct vfs_handle_struct *handle,
 791                                       const char *filename);
 792
 793         NTSTATUS (*brl_lock_windows_fn)(struct vfs_handle_struct *handle,
 794                                         struct byte_range_lock *br_lck,
 795                                         struct lock_struct *plock,
 796                                         bool blocking_lock);
 797
 798         bool (*brl_unlock_windows_fn)(struct vfs_handle_struct *handle,
 799                                       struct messaging_context *msg_ctx,
 800                                       struct byte_range_lock *br_lck,
 801                                       const struct lock_struct *plock);
 802
 803         bool (*brl_cancel_windows_fn)(struct vfs_handle_struct *handle,
 804                                       struct byte_range_lock *br_lck,
 805                                       struct lock_struct *plock);
 806
 807         bool (*strict_lock_fn)(struct vfs_handle_struct *handle,
 808                                struct files_struct *fsp,
 809                                struct lock_struct *plock);
 810
 811         void (*strict_unlock_fn)(struct vfs_handle_struct *handle,
 812                                  struct files_struct *fsp,
 813                                  struct lock_struct *plock);
 814
 815         NTSTATUS (*translate_name_fn)(struct vfs_handle_struct *handle,
 816                                       const char *name,
 817                                       enum vfs_translate_direction direction,
 818                                       TALLOC_CTX *mem_ctx,
 819                                       char **mapped_name);
 820
 821         NTSTATUS (*fsctl_fn)(struct vfs_handle_struct *handle,
 822                              struct files_struct *fsp,
 823                              TALLOC_CTX *ctx,
 824                              uint32_t function,
 825                              uint16_t req_flags,
 826                              const uint8_t *_in_data,
 827                              uint32_t in_len,
 828                              uint8_t **_out_data,
 829                              uint32_t max_out_len,
 830                              uint32_t *out_len);
 831
 832         NTSTATUS (*get_dos_attributes_fn)(struct vfs_handle_struct *handle,
 833                                           struct smb_filename *smb_fname,
 834                                           uint32_t *dosmode);
 835
 836         NTSTATUS (*fget_dos_attributes_fn)(struct vfs_handle_struct *handle,
 837                                            struct files_struct *fsp,
 838                                            uint32_t *dosmode);
 839
 840         NTSTATUS (*set_dos_attributes_fn)(struct vfs_handle_struct *handle,
 841                                           const struct smb_filename *smb_fname,
 842                                           uint32_t dosmode);
 843
 844         NTSTATUS (*fset_dos_attributes_fn)(struct vfs_handle_struct *hande,
 845                                            struct files_struct *fsp,
 846                                            uint32_t dosmode);
 847
 848         /* NT ACL operations. */
 849
 850         NTSTATUS (*fget_nt_acl_fn)(struct vfs_handle_struct *handle,
 851                                    struct files_struct *fsp,
 852                                    uint32_t security_info,
 853                                    TALLOC_CTX *mem_ctx,
 854                                    struct security_descriptor **ppdesc);
 855         NTSTATUS (*get_nt_acl_fn)(struct vfs_handle_struct *handle,
 856                                   const struct smb_filename *smb_fname,
 857                                   uint32_t security_info,
 858                                    TALLOC_CTX *mem_ctx,
 859                                   struct security_descriptor **ppdesc);
 860         NTSTATUS (*fset_nt_acl_fn)(struct vfs_handle_struct *handle,
 861                                    struct files_struct *fsp,
 862                                    uint32_t security_info_sent,
 863                                    const struct security_descriptor *psd);
 864
 865         NTSTATUS (*audit_file_fn)(struct vfs_handle_struct *handle,
 866                                   struct smb_filename *file,
 867                                   struct security_acl *sacl,
 868                                   uint32_t access_requested,
 869                                   uint32_t access_denied);
 870
 871         /* POSIX ACL operations. */
 872
 873         int (*chmod_acl_fn)(struct vfs_handle_struct *handle,
 874                                         const struct smb_filename *smb_fname,
 875                                         mode_t mode);
 876         int (*fchmod_acl_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
 877
 878         SMB_ACL_T (*sys_acl_get_file_fn)(struct vfs_handle_struct *handle,
 879                                          const struct smb_filename *smb_fname,
 880                                          SMB_ACL_TYPE_T type,
 881                                          TALLOC_CTX *mem_ctx);
 882         SMB_ACL_T (*sys_acl_get_fd_fn)(struct vfs_handle_struct *handle,
 883                                        struct files_struct *fsp,
 884                                        TALLOC_CTX *mem_ctx);
 885         int (*sys_acl_blob_get_file_fn)(struct vfs_handle_struct *handle,
 886                                         const struct smb_filename *smb_fname,
 887                                         TALLOC_CTX *mem_ctx,
 888                                         char **blob_description,
 889                                         DATA_BLOB *blob);
 890         int (*sys_acl_blob_get_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp,
 891                                       TALLOC_CTX *mem_ctx, char **blob_description,
 892                                       DATA_BLOB *blob);
 893         int (*sys_acl_set_file_fn)(struct vfs_handle_struct *handle,
 894                                         const struct smb_filename *smb_fname,
 895                                         SMB_ACL_TYPE_T acltype,
 896                                         SMB_ACL_T theacl);
 897         int (*sys_acl_set_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_ACL_T theacl);
 898         int (*sys_acl_delete_def_file_fn)(struct vfs_handle_struct *handle,
 899                                         const struct smb_filename *smb_fname);
 900
 901         /* EA operations. */
 902         ssize_t (*getxattr_fn)(struct vfs_handle_struct *handle,
 903                                         const struct smb_filename *smb_fname,
 904                                         const char *name,
 905                                         void *value,
 906                                         size_t size);
 907         ssize_t (*fgetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size);
 908         ssize_t (*listxattr_fn)(struct vfs_handle_struct *handle,
 909                                         const struct smb_filename *smb_fname,
 910                                         char *list,
 911                                         size_t size);
 912         ssize_t (*flistxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size);
 913         int (*removexattr_fn)(struct vfs_handle_struct *handle,
 914                                         const struct smb_filename *smb_fname,
 915                                         const char *name);
 916         int (*fremovexattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name);
 917         int (*setxattr_fn)(struct vfs_handle_struct *handle,
 918                                         const struct smb_filename *smb_fname,
 919                                         const char *name,
 920                                         const void *value,
 921                                         size_t size,
 922                                         int flags);
 923         int (*fsetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags);
 924
 925         /* aio operations */
 926         bool (*aio_force_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 927
 928         /* durable handle operations */
 929         NTSTATUS (*durable_cookie_fn)(struct vfs_handle_struct *handle,
 930                                       struct files_struct *fsp,
 931                                       TALLOC_CTX *mem_ctx,
 932                                       DATA_BLOB *cookie);
 933         NTSTATUS (*durable_disconnect_fn)(struct vfs_handle_struct *handle,
 934                                           struct files_struct *fsp,
 935                                           const DATA_BLOB old_cookie,
 936                                           TALLOC_CTX *mem_ctx,
 937                                           DATA_BLOB *new_cookie);
 938         NTSTATUS (*durable_reconnect_fn)(struct vfs_handle_struct *handle,
 939                                          struct smb_request *smb1req,
 940                                          struct smbXsrv_open *op,
 941                                          const DATA_BLOB old_cookie,
 942                                          TALLOC_CTX *mem_ctx,
 943                                          struct files_struct **fsp,
 944                                          DATA_BLOB *new_cookie);
 945
 946         NTSTATUS (*readdir_attr_fn)(struct vfs_handle_struct *handle,
 947                                     const struct smb_filename *fname,
 948                                     TALLOC_CTX *mem_ctx,
 949                                     struct readdir_attr_data **attr_data);
 950 };
 951
 952 /*
 953     VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
 954     which describes all operations this module is willing to intercept.
 955     VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
 956     using this information.
 957 */
 958
 959 typedef struct vfs_handle_struct {
 960         struct vfs_handle_struct  *next, *prev;
 961         const char *param;
 962         struct connection_struct *conn;
 963         const struct vfs_fn_pointers *fns;
 964         void *data;
 965         void (*free_data)(void **data);
 966 } vfs_handle_struct;
 967
 968
 969 typedef struct vfs_statvfs_struct {
 970         /* For undefined recommended transfer size return -1 in that field */
 971         uint32_t OptimalTransferSize;  /* bsize on some os, iosize on other os */
 972         uint32_t BlockSize;
 973
 974         /*
 975          The next three fields are in terms of the block size.
 976          (above). If block size is unknown, 4096 would be a
 977          reasonable block size for a server to report.
 978          Note that returning the blocks/blocksavail removes need
 979          to make a second call (to QFSInfo level 0x103 to get this info.
 980          UserBlockAvail is typically less than or equal to BlocksAvail,
 981          if no distinction is made return the same value in each.
 982         */
 983
 984         uint64_t TotalBlocks;
 985         uint64_t BlocksAvail;       /* bfree */
 986         uint64_t UserBlocksAvail;   /* bavail */
 987
 988         /* For undefined Node fields or FSID return -1 */
 989         uint64_t TotalFileNodes;
 990         uint64_t FreeFileNodes;
 991         uint64_t FsIdentifier;   /* fsid */
 992         /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
 993         /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call   */
 994
 995         int FsCapabilities;
 996 } vfs_statvfs_struct;
 997
 998 /* Add a new FSP extension of the given type. Returns a pointer to the
 999  * extenstion data.
1000  */
1001 #define VFS_ADD_FSP_EXTENSION(handle, fsp, type, destroy_fn)            \
1002     vfs_add_fsp_extension_notype(handle, (fsp), sizeof(type), (destroy_fn))
1003
1004 /* Return a pointer to the existing FSP extension data. */
1005 #define VFS_FETCH_FSP_EXTENSION(handle, fsp) \
1006     vfs_fetch_fsp_extension(handle, (fsp))
1007
1008 /* Return the talloc context associated with an FSP extension. */
1009 #define VFS_MEMCTX_FSP_EXTENSION(handle, fsp) \
1010     vfs_memctx_fsp_extension(handle, (fsp))
1011
1012 /* Remove and destroy an FSP extension. */
1013 #define VFS_REMOVE_FSP_EXTENSION(handle, fsp) \
1014     vfs_remove_fsp_extension((handle), (fsp))
1015
1016 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
1017         if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
1018                 DEBUG(0,("%s() failed to get vfs_handle->data!\n",__FUNCTION__)); \
1019                 ret; \
1020         } \
1021 }
1022
1023 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
1024         if (!(handle)) { \
1025                 DEBUG(0,("%s() failed to set handle->data!\n",__FUNCTION__)); \
1026                 ret; \
1027         } else { \
1028                 if ((handle)->free_data) { \
1029                         (handle)->free_data(&(handle)->data); \
1030                 } \
1031                 (handle)->data = (void *)datap; \
1032                 (handle)->free_data = free_fn; \
1033         } \
1034 }
1035
1036 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
1037         if ((handle) && (handle)->free_data) { \
1038                 (handle)->free_data(&(handle)->data); \
1039         } \
1040 }
1041
1042 /* Check whether module-specific data handle was already allocated or not */
1043 #define SMB_VFS_HANDLE_TEST_DATA(handle)  ( !(handle) || !(handle)->data ? False : True )
1044
1045 #define SMB_VFS_OP(x) ((void *) x)
1046
1047 #define DEFAULT_VFS_MODULE_NAME "/[Default VFS]/"
1048
1049 #include "vfs_macros.h"
1050
1051 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
1052                          const char *service, const char *user);
1053 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle);
1054 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
1055                                 const char *path, uint64_t *bsize,
1056                                 uint64_t *dfree, uint64_t *dsize);
1057 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle, const char *path,
1058                            enum SMB_QUOTA_TYPE qtype, unid_t id,
1059                            SMB_DISK_QUOTA *qt);
1060 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
1061                            enum SMB_QUOTA_TYPE qtype, unid_t id,
1062                            SMB_DISK_QUOTA *qt);
1063 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
1064                                       struct files_struct *fsp,
1065                                       struct shadow_copy_data *shadow_copy_data,
1066                                       bool labels);
1067 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle, const char *path,
1068                          struct vfs_statvfs_struct *statbuf);
1069 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
1070                                       enum timestamp_set_resolution *p_ts_res);
1071 /*
1072  * Note: that "struct dfs_GetDFSReferral *r" needs to be a valid TALLOC_CTX
1073  */
1074 NTSTATUS smb_vfs_call_get_dfs_referrals(struct vfs_handle_struct *handle,
1075                                         struct dfs_GetDFSReferral *r);
1076 DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
1077                         const struct smb_filename *smb_fname,
1078                         const char *mask,
1079                         uint32_t attributes);
1080 DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
1081                                         struct files_struct *fsp,
1082                                         const char *mask,
1083                                         uint32_t attributes);
1084 struct dirent *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1085                                         DIR *dirp,
1086                                         SMB_STRUCT_STAT *sbuf);
1087 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
1088                           DIR *dirp, long offset);
1089 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
1090                           DIR *dirp);
1091 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1092                              DIR *dirp);
1093 int smb_vfs_call_mkdir(struct vfs_handle_struct *handle,
1094                         const struct smb_filename *smb_fname,
1095                         mode_t mode);
1096 int smb_vfs_call_rmdir(struct vfs_handle_struct *handle,
1097                         const struct smb_filename *smb_fname);
1098 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1099                           DIR *dir);
1100 void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
1101                                  DIR *dirp);
1102 int smb_vfs_call_open(struct vfs_handle_struct *handle,
1103                       struct smb_filename *smb_fname, struct files_struct *fsp,
1104                       int flags, mode_t mode);
1105 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1106                                   struct smb_request *req,
1107                                   uint16_t root_dir_fid,
1108                                   struct smb_filename *smb_fname,
1109                                   uint32_t access_mask,
1110                                   uint32_t share_access,
1111                                   uint32_t create_disposition,
1112                                   uint32_t create_options,
1113                                   uint32_t file_attributes,
1114                                   uint32_t oplock_request,
1115                                   struct smb2_lease *lease,
1116                                   uint64_t allocation_size,
1117                                   uint32_t private_flags,
1118                                   struct security_descriptor *sd,
1119                                   struct ea_list *ea_list,
1120                                   files_struct **result,
1121                                   int *pinfo,
1122                                   const struct smb2_create_blobs *in_context_blobs,
1123                                   struct smb2_create_blobs *out_context_blobs);
1124 int smb_vfs_call_close(struct vfs_handle_struct *handle,
1125                        struct files_struct *fsp);
1126 ssize_t smb_vfs_call_read(struct vfs_handle_struct *handle,
1127                           struct files_struct *fsp, void *data, size_t n);
1128 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1129                            struct files_struct *fsp, void *data, size_t n,
1130                            off_t offset);
1131 struct tevent_req *smb_vfs_call_pread_send(struct vfs_handle_struct *handle,
1132                                            TALLOC_CTX *mem_ctx,
1133                                            struct tevent_context *ev,
1134                                            struct files_struct *fsp,
1135                                            void *data,
1136                                            size_t n, off_t offset);
1137 ssize_t SMB_VFS_PREAD_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1138
1139 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
1140                            struct files_struct *fsp, const void *data,
1141                            size_t n);
1142 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1143                             struct files_struct *fsp, const void *data,
1144                             size_t n, off_t offset);
1145 struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
1146                                             TALLOC_CTX *mem_ctx,
1147                                             struct tevent_context *ev,
1148                                             struct files_struct *fsp,
1149                                             const void *data,
1150                                             size_t n, off_t offset);
1151 ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1152
1153 off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1154                              struct files_struct *fsp, off_t offset,
1155                              int whence);
1156 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1157                               files_struct *fromfsp, const DATA_BLOB *header,
1158                               off_t offset, size_t count);
1159 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1160                               files_struct *tofsp, off_t offset,
1161                               size_t count);
1162 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
1163                         const struct smb_filename *smb_fname_src,
1164                         const struct smb_filename *smb_fname_dst);
1165 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
1166                        struct files_struct *fsp);
1167
1168 struct tevent_req *smb_vfs_call_fsync_send(struct vfs_handle_struct *handle,
1169                                            TALLOC_CTX *mem_ctx,
1170                                            struct tevent_context *ev,
1171                                            struct files_struct *fsp);
1172 int SMB_VFS_FSYNC_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1173
1174 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1175                       struct smb_filename *smb_fname);
1176 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1177                        struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
1178 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1179                        struct smb_filename *smb_filename);
1180 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1181                                      struct files_struct *fsp,
1182                                      const SMB_STRUCT_STAT *sbuf);
1183 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
1184                         const struct smb_filename *smb_fname);
1185 int smb_vfs_call_chmod(struct vfs_handle_struct *handle,
1186                         const struct smb_filename *smb_fname,
1187                         mode_t mode);
1188 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1189                         struct files_struct *fsp, mode_t mode);
1190 int smb_vfs_call_chown(struct vfs_handle_struct *handle,
1191                         const struct smb_filename *smb_fname,
1192                         uid_t uid,
1193                         gid_t gid);
1194 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1195                         struct files_struct *fsp, uid_t uid, gid_t gid);
1196 int smb_vfs_call_lchown(struct vfs_handle_struct *handle,
1197                         const struct smb_filename *smb_fname,
1198                         uid_t uid,
1199                         gid_t gid);
1200 int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path);
1201 char *smb_vfs_call_getwd(struct vfs_handle_struct *handle);
1202 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
1203                         const struct smb_filename *smb_fname,
1204                         struct smb_file_time *ft);
1205 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
1206                            struct files_struct *fsp, off_t offset);
1207 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
1208                            struct files_struct *fsp,
1209                            uint32_t mode,
1210                            off_t offset,
1211                            off_t len);
1212 bool smb_vfs_call_lock(struct vfs_handle_struct *handle,
1213                        struct files_struct *fsp, int op, off_t offset,
1214                        off_t count, int type);
1215 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
1216                               struct files_struct *fsp, uint32_t share_mode,
1217                               uint32_t access_mask);
1218 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
1219                                 struct files_struct *fsp, int leasetype);
1220 bool smb_vfs_call_getlock(struct vfs_handle_struct *handle,
1221                           struct files_struct *fsp, off_t *poffset,
1222                           off_t *pcount, int *ptype, pid_t *ppid);
1223 int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
1224                          const char *newpath);
1225 int smb_vfs_call_readlink(struct vfs_handle_struct *handle,
1226                           const char *path, char *buf, size_t bufsiz);
1227 int smb_vfs_call_link(struct vfs_handle_struct *handle, const char *oldpath,
1228                       const char *newpath);
1229 int smb_vfs_call_mknod(struct vfs_handle_struct *handle,
1230                         const struct smb_filename *smb_fname,
1231                         mode_t mode,
1232                         SMB_DEV_T dev);
1233 char *smb_vfs_call_realpath(struct vfs_handle_struct *handle, const char *path);
1234 int smb_vfs_call_chflags(struct vfs_handle_struct *handle, const char *path,
1235                          unsigned int flags);
1236 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
1237                                            const SMB_STRUCT_STAT *sbuf);
1238 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
1239                                  struct files_struct *fsp,
1240                                  const struct smb_filename *smb_fname,
1241                                  TALLOC_CTX *mem_ctx,
1242                                  unsigned int *num_streams,
1243                                  struct stream_struct **streams);
1244 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
1245                                    const char *path, const char *name,
1246                                    TALLOC_CTX *mem_ctx, char **found_name);
1247 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
1248                                      const char *filename);
1249 NTSTATUS smb_vfs_call_brl_lock_windows(struct vfs_handle_struct *handle,
1250                                        struct byte_range_lock *br_lck,
1251                                        struct lock_struct *plock,
1252                                        bool blocking_lock);
1253 bool smb_vfs_call_brl_unlock_windows(struct vfs_handle_struct *handle,
1254                                      struct messaging_context *msg_ctx,
1255                                      struct byte_range_lock *br_lck,
1256                                      const struct lock_struct *plock);
1257 bool smb_vfs_call_brl_cancel_windows(struct vfs_handle_struct *handle,
1258                                      struct byte_range_lock *br_lck,
1259                                      struct lock_struct *plock);
1260 bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
1261                               struct files_struct *fsp,
1262                               struct lock_struct *plock);
1263 void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
1264                                 struct files_struct *fsp,
1265                                 struct lock_struct *plock);
1266 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
1267                                      const char *name,
1268                                      enum vfs_translate_direction direction,
1269                                      TALLOC_CTX *mem_ctx,
1270                                      char **mapped_name);
1271 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
1272                             struct files_struct *fsp,
1273                             TALLOC_CTX *ctx,
1274                             uint32_t function,
1275                             uint16_t req_flags,
1276                             const uint8_t *_in_data,
1277                             uint32_t in_len,
1278                             uint8_t **_out_data,
1279                             uint32_t max_out_len,
1280                             uint32_t *out_len);
1281 NTSTATUS smb_vfs_call_get_dos_attributes(struct vfs_handle_struct *handle,
1282                                          struct smb_filename *smb_fname,
1283                                          uint32_t *dosmode);
1284 NTSTATUS smb_vfs_call_fget_dos_attributes(struct vfs_handle_struct *handle,
1285                                           struct files_struct *fsp,
1286                                           uint32_t *dosmode);
1287 NTSTATUS smb_vfs_call_set_dos_attributes(struct vfs_handle_struct *handle,
1288                                          const struct smb_filename *smb_fname,
1289                                          uint32_t dosmode);
1290 NTSTATUS smb_vfs_call_fset_dos_attributes(struct vfs_handle_struct *handle,
1291                                           struct files_struct *fsp,
1292                                           uint32_t dosmode);
1293 struct tevent_req *smb_vfs_call_copy_chunk_send(struct vfs_handle_struct *handle,
1294                                                 TALLOC_CTX *mem_ctx,
1295                                                 struct tevent_context *ev,
1296                                                 struct files_struct *src_fsp,
1297                                                 off_t src_off,
1298                                                 struct files_struct *dest_fsp,
1299                                                 off_t dest_off,
1300                                                 off_t num,
1301                                                 uint32_t flags);
1302 NTSTATUS smb_vfs_call_copy_chunk_recv(struct vfs_handle_struct *handle,
1303                                       struct tevent_req *req,
1304                                       off_t *copied);
1305 NTSTATUS smb_vfs_call_get_compression(struct vfs_handle_struct *handle,
1306                                       TALLOC_CTX *mem_ctx,
1307                                       struct files_struct *fsp,
1308                                       struct smb_filename *smb_fname,
1309                                       uint16_t *_compression_fmt);
1310 NTSTATUS smb_vfs_call_set_compression(struct vfs_handle_struct *handle,
1311                                       TALLOC_CTX *mem_ctx,
1312                                       struct files_struct *fsp,
1313                                       uint16_t compression_fmt);
1314 NTSTATUS smb_vfs_call_snap_check_path(vfs_handle_struct *handle,
1315                                       TALLOC_CTX *mem_ctx,
1316                                       const char *service_path,
1317                                       char **base_volume);
1318 NTSTATUS smb_vfs_call_snap_create(struct vfs_handle_struct *handle,
1319                                   TALLOC_CTX *mem_ctx,
1320                                   const char *base_volume,
1321                                   time_t *tstamp,
1322                                   bool rw,
1323                                   char **base_path,
1324                                   char **snap_path);
1325 NTSTATUS smb_vfs_call_snap_delete(struct vfs_handle_struct *handle,
1326                                   TALLOC_CTX *mem_ctx,
1327                                   char *base_path,
1328                                   char *snap_path);
1329 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
1330                                   struct files_struct *fsp,
1331                                   uint32_t security_info,
1332                                   TALLOC_CTX *mem_ctx,
1333                                   struct security_descriptor **ppdesc);
1334 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
1335                                  const struct smb_filename *smb_fname,
1336                                  uint32_t security_info,
1337                                  TALLOC_CTX *mem_ctx,
1338                                  struct security_descriptor **ppdesc);
1339 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
1340                                   struct files_struct *fsp,
1341                                   uint32_t security_info_sent,
1342                                   const struct security_descriptor *psd);
1343 NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
1344                                  struct smb_filename *file,
1345                                  struct security_acl *sacl,
1346                                  uint32_t access_requested,
1347                                  uint32_t access_denied);
1348 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle,
1349                                 const struct smb_filename *file,
1350                                 mode_t mode);
1351 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
1352                             struct files_struct *fsp, mode_t mode);
1353 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
1354                                         const struct smb_filename *smb_fname,
1355                                         SMB_ACL_TYPE_T type,
1356                                         TALLOC_CTX *mem_ctx);
1357 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
1358                                       struct files_struct *fsp,
1359                                       TALLOC_CTX *mem_ctx);
1360 int smb_vfs_call_sys_acl_blob_get_file(struct vfs_handle_struct *handle,
1361                                        const struct smb_filename *smb_fname,
1362                                        TALLOC_CTX *mem_ctx,
1363                                        char **blob_description,
1364                                        DATA_BLOB *blob);
1365 int smb_vfs_call_sys_acl_blob_get_fd(struct vfs_handle_struct *handle,
1366                                      struct files_struct *fsp,
1367                                      TALLOC_CTX *mem_ctx,
1368                                      char **blob_description,
1369                                      DATA_BLOB *blob);
1370 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
1371                                 const struct smb_filename *smb_fname,
1372                                 SMB_ACL_TYPE_T acltype,
1373                                 SMB_ACL_T theacl);
1374 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
1375                                 struct files_struct *fsp, SMB_ACL_T theacl);
1376 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1377                                 const struct smb_filename *smb_fname);
1378 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
1379                                 const struct smb_filename *smb_fname,
1380                                 const char *name,
1381                                 void *value,
1382                                 size_t size);
1383 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
1384                                struct files_struct *fsp, const char *name,
1385                                void *value, size_t size);
1386 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
1387                                 const struct smb_filename *smb_fname,
1388                                 char *list,
1389                                 size_t size);
1390 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
1391                                 struct files_struct *fsp, char *list,
1392                                 size_t size);
1393 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
1394                                 const struct smb_filename *smb_fname,
1395                                 const char *name);
1396 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
1397                               struct files_struct *fsp, const char *name);
1398 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle,
1399                                 const struct smb_filename *smb_fname,
1400                                 const char *name,
1401                                 const void *value,
1402                                 size_t size,
1403                                 int flags);
1404 int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
1405                            const char *name, const void *value, size_t size,
1406                            int flags);
1407 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
1408                            struct files_struct *fsp, const char *name,
1409                            const void *value, size_t size, int flags);
1410 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
1411                             struct files_struct *fsp);
1412 bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
1413                              const struct smb_filename *fname,
1414                              SMB_STRUCT_STAT *sbuf);
1415 int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
1416                              const struct smb_filename *fname);
1417 NTSTATUS smb_vfs_call_durable_cookie(struct vfs_handle_struct *handle,
1418                                      struct files_struct *fsp,
1419                                      TALLOC_CTX *mem_ctx,
1420                                      DATA_BLOB *cookie);
1421 NTSTATUS smb_vfs_call_durable_disconnect(struct vfs_handle_struct *handle,
1422                                          struct files_struct *fsp,
1423                                          const DATA_BLOB old_cookie,
1424                                          TALLOC_CTX *mem_ctx,
1425                                          DATA_BLOB *new_cookie);
1426 NTSTATUS smb_vfs_call_durable_reconnect(struct vfs_handle_struct *handle,
1427                                         struct smb_request *smb1req,
1428                                         struct smbXsrv_open *op,
1429                                         const DATA_BLOB old_cookie,
1430                                         TALLOC_CTX *mem_ctx,
1431                                         struct files_struct **fsp,
1432                                         DATA_BLOB *new_cookie);
1433 NTSTATUS smb_vfs_call_readdir_attr(struct vfs_handle_struct *handle,
1434                                    const struct smb_filename *fname,
1435                                    TALLOC_CTX *mem_ctx,
1436                                    struct readdir_attr_data **attr_data);
1437
1438 NTSTATUS smb_register_vfs(int version, const char *name,
1439                           const struct vfs_fn_pointers *fns);
1440 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
1441                                    files_struct *fsp, size_t ext_size,
1442                                    void (*destroy_fn)(void *p_data));
1443 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1444 void vfs_remove_all_fsp_extensions(struct files_struct *fsp);
1445 void *vfs_memctx_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1446 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1447
1448 void smb_vfs_assert_all_fns(const struct vfs_fn_pointers* fns,
1449                             const char *module);
1450
1451 #endif /* _VFS_H */