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 /* Version 37 - Change chflags from const char *
 218                 to const struct smb_filename * */
 219 /* Version 37 - Change disk_free from const char *
 220                 to const struct smb_filename * */
 221 /* Version 37 - Change get_quota from const char *
 222                 to const struct smb_filename * */
 223 /* Version 37 - Change link from const char *
 224                 to const struct smb_filename * */
 225
 226 #define SMB_VFS_INTERFACE_VERSION 37
 227
 228 /*
 229     All intercepted VFS operations must be declared as static functions inside module source
 230     in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
 231     example VFS modules for more details.
 232 */
 233
 234 /* VFS operations structure */
 235
 236 struct vfs_handle_struct;
 237 struct connection_struct;
 238 struct files_struct;
 239 struct security_descriptor;
 240 struct vfs_statvfs_struct;
 241 struct smb_request;
 242 struct ea_list;
 243 struct smb_file_time;
 244 struct blocking_lock_record;
 245 struct smb_filename;
 246 struct dfs_GetDFSReferral;
 247
 248 typedef union unid_t {
 249         uid_t uid;
 250         gid_t gid;
 251 } unid_t;
 252
 253 struct fd_handle {
 254         size_t ref_count;
 255         int fd;
 256         uint64_t position_information;
 257         off_t pos;
 258         uint32_t private_options;       /* NT Create options, but we only look at
 259                                  * NTCREATEX_OPTIONS_PRIVATE_DENY_DOS and
 260                                  * NTCREATEX_OPTIONS_PRIVATE_DENY_FCB and
 261                                  * NTCREATEX_OPTIONS_PRIVATE_DELETE_ON_CLOSE
 262                                  * for print files *only*, where
 263                                  * DELETE_ON_CLOSE is not stored in the share
 264                                  * mode database.
 265                                  */
 266         unsigned long gen_id;
 267 };
 268
 269 struct fsp_lease {
 270         size_t ref_count;
 271         struct smbd_server_connection *sconn;
 272         struct tevent_timer *timeout;
 273         struct smb2_lease lease;
 274 };
 275
 276 typedef struct files_struct {
 277         struct files_struct *next, *prev;
 278         uint64_t fnum;
 279         struct smbXsrv_open *op;
 280         struct connection_struct *conn;
 281         struct fd_handle *fh;
 282         unsigned int num_smb_operations;
 283         struct file_id file_id;
 284         uint64_t initial_allocation_size; /* Faked up initial allocation on disk. */
 285         uint16_t file_pid;
 286         uint64_t vuid; /* SMB2 compat */
 287         struct write_cache *wcp;
 288         struct timeval open_time;
 289         uint32_t access_mask;           /* NTCreateX access bits (FILE_READ_DATA etc.) */
 290         uint32_t share_access;          /* NTCreateX share constants (FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE). */
 291
 292         bool kernel_share_modes_taken;
 293
 294         bool update_write_time_triggered;
 295         struct tevent_timer *update_write_time_event;
 296         bool update_write_time_on_close;
 297         struct timespec close_write_time;
 298         bool write_time_forced;
 299
 300         int oplock_type;
 301         struct fsp_lease *lease;
 302         int sent_oplock_break;
 303         struct tevent_timer *oplock_timeout;
 304         struct lock_struct last_lock_failure;
 305         int current_lock_count; /* Count the number of outstanding locks and pending locks. */
 306
 307         bool can_lock;
 308         bool can_read;
 309         bool can_write;
 310         bool modified;
 311         bool is_directory;
 312         bool aio_write_behind;
 313         bool initial_delete_on_close; /* Only set at NTCreateX if file was created. */
 314         bool delete_on_close;
 315         uint64_t posix_flags;
 316         bool is_sparse;
 317         bool backup_intent; /* Handle was successfully opened with backup intent
 318                                 and opener has privilege to do so. */
 319         bool aapl_copyfile_supported;
 320         bool use_ofd_locks; /* Are we using open file description locks ? */
 321         struct smb_filename *fsp_name;
 322         uint32_t name_hash;             /* Jenkins hash of full pathname. */
 323         uint64_t mid;                   /* Mid of the operation that created us. */
 324
 325         struct vfs_fsp_data *vfs_extension;
 326         struct fake_file_handle *fake_file_handle;
 327
 328         struct notify_change_buf *notify;
 329
 330         struct files_struct *base_fsp; /* placeholder for delete on close */
 331
 332         /*
 333          * Read-only cached brlock record, thrown away when the
 334          * brlock.tdb seqnum changes. This avoids fetching data from
 335          * the brlock.tdb on every read/write call.
 336          */
 337         int brlock_seqnum;
 338         struct byte_range_lock *brlock_rec;
 339
 340         struct dptr_struct *dptr;
 341
 342         /* if not NULL, means this is a print file */
 343         struct print_file_data *print_file;
 344
 345         unsigned num_aio_requests;
 346         struct tevent_req **aio_requests;
 347
 348         /*
 349          * If a close request comes in while we still have aio_requests
 350          * around, we need to hold back the close. When all aio_requests are
 351          * done, the aio completion routines need tevent_wait_done() on
 352          * this. A bit ugly, but before we have close_file() fully async
 353          * possibly the simplest approach. Thanks, Jeremy for the idea.
 354          */
 355         struct tevent_req *deferred_close;
 356 } files_struct;
 357
 358 #define FSP_POSIX_FLAGS_OPEN            0x01
 359 #define FSP_POSIX_FLAGS_RENAME          0x02
 360 #define FSP_POSIX_FLAGS_PATHNAMES       0x04
 361
 362 #define FSP_POSIX_FLAGS_ALL                     \
 363         (FSP_POSIX_FLAGS_OPEN |                 \
 364          FSP_POSIX_FLAGS_PATHNAMES |            \
 365          FSP_POSIX_FLAGS_RENAME)
 366
 367 struct vuid_cache_entry {
 368         struct auth_session_info *session_info;
 369         uint64_t vuid; /* SMB2 compat */
 370         bool read_only;
 371         uint32_t share_access;
 372 };
 373
 374 struct vuid_cache {
 375         unsigned int next_entry;
 376         struct vuid_cache_entry array[VUID_CACHE_SIZE];
 377 };
 378
 379 typedef struct {
 380         char *name;
 381         bool is_wild;
 382 } name_compare_entry;
 383
 384 struct dfree_cached_info {
 385         time_t last_dfree_time;
 386         uint64_t dfree_ret;
 387         uint64_t bsize;
 388         uint64_t dfree;
 389         uint64_t dsize;
 390 };
 391
 392 struct share_params {
 393         int service;
 394 };
 395
 396 typedef struct connection_struct {
 397         struct connection_struct *next, *prev;
 398         struct smbd_server_connection *sconn; /* can be NULL */
 399         struct smbXsrv_tcon *tcon; /* can be NULL */
 400         uint32_t cnum; /* an index passed over the wire */
 401         struct share_params *params;
 402         bool force_user;
 403         struct vuid_cache *vuid_cache;
 404         bool printer;
 405         bool ipc;
 406         bool read_only; /* Attributes for the current user of the share. */
 407         uint32_t share_access;
 408         /* Does this filesystem honor
 409            sub second timestamps on files
 410            and directories when setting time ? */
 411         enum timestamp_set_resolution ts_res;
 412         char *connectpath;
 413         char *origpath;
 414         char *cwd; /* Working directory. */
 415
 416         struct vfs_handle_struct *vfs_handles;          /* for the new plugins */
 417
 418         /*
 419          * This represents the user information on this connection. Depending
 420          * on the vuid using this tid, this might change per SMB request.
 421          */
 422         struct auth_session_info *session_info;
 423
 424         /*
 425          * If the "force group" parameter is set, this is the primary gid that
 426          * may be used in the users token, depending on the vuid using this tid.
 427          */
 428         gid_t force_group_gid;
 429
 430         uint64_t vuid; /* vuid of user who *opened* this connection, or UID_FIELD_INVALID */
 431
 432         time_t lastused;
 433         time_t lastused_count;
 434         int num_files_open;
 435         unsigned int num_smb_operations; /* Count of smb operations on this tree. */
 436         int encrypt_level;
 437         bool encrypted_tid;
 438
 439         /* Semantics requested by the client or forced by the server config. */
 440         bool case_sensitive;
 441         bool case_preserve;
 442         bool short_case_preserve;
 443
 444         /* Semantics provided by the underlying filesystem. */
 445         int fs_capabilities;
 446         /* Device number of the directory of the share mount.
 447            Used to ensure unique FileIndex returns. */
 448         SMB_DEV_T base_share_dev;
 449
 450         name_compare_entry *hide_list; /* Per-share list of files to return as hidden. */
 451         name_compare_entry *veto_list; /* Per-share list of files to veto (never show). */
 452         name_compare_entry *veto_oplock_list; /* Per-share list of files to refuse oplocks on. */
 453         name_compare_entry *aio_write_behind_list; /* Per-share list of files to use aio write behind on. */
 454         struct dfree_cached_info *dfree_info;
 455         struct trans_state *pending_trans;
 456
 457         struct rpc_pipe_client *spoolss_pipe;
 458
 459 } connection_struct;
 460
 461 struct smbd_smb2_request;
 462 struct privilege_paths;
 463
 464 struct smb_request {
 465         uint8_t cmd;
 466         uint16_t flags2;
 467         uint16_t smbpid;
 468         uint64_t mid; /* For compatibility with SMB2. */
 469         uint32_t seqnum;
 470         uint64_t vuid; /* For compatibility with SMB2. */
 471         uint32_t tid;
 472         uint8_t  wct;
 473         const uint16_t *vwv;
 474         uint16_t buflen;
 475         const uint8_t *buf;
 476         const uint8_t *inbuf;
 477
 478         /*
 479          * Async handling in the main smb processing loop is directed by
 480          * outbuf: reply_xxx routines indicate sync behaviour by putting their
 481          * reply into "outbuf". If they leave it as NULL, they take care of it
 482          * themselves, possibly later.
 483          *
 484          * If async handling is wanted, the reply_xxx routine must make sure
 485          * that it talloc_move()s the smb_req somewhere else.
 486          */
 487         uint8_t *outbuf;
 488
 489         size_t unread_bytes;
 490         bool encrypted;
 491         connection_struct *conn;
 492         struct smbd_server_connection *sconn;
 493         struct smbXsrv_connection *xconn;
 494         struct smb_perfcount_data pcd;
 495
 496         /*
 497          * Chained request handling
 498          */
 499         struct files_struct *chain_fsp;
 500
 501         /*
 502          * state information for async smb handling
 503          */
 504         void *async_priv;
 505
 506         /*
 507          * Back pointer to smb2 request.
 508          */
 509         struct smbd_smb2_request *smb2req;
 510
 511         /*
 512          * Pathnames used if request done
 513          * under privilege.
 514          */
 515         struct privilege_paths *priv_paths;
 516
 517         /*
 518          * Request list for chained requests, we're part of it.
 519          */
 520         struct smb_request **chain;
 521
 522         struct timeval request_time;
 523
 524         bool posix_pathnames;
 525 };
 526
 527 /*
 528  * Info about an alternate data stream
 529  */
 530
 531 struct stream_struct {
 532         off_t size;
 533         off_t alloc_size;
 534         char *name;
 535 };
 536
 537 /* time info */
 538 struct smb_file_time {
 539         struct timespec mtime;
 540         struct timespec atime;
 541         struct timespec ctime;
 542         struct timespec create_time;
 543 };
 544
 545 /*
 546  * smb_filename
 547  */
 548 struct smb_filename {
 549         char *base_name;
 550         char *stream_name;
 551         char *original_lcomp;
 552         uint32_t flags;
 553         SMB_STRUCT_STAT st;
 554 };
 555
 556 /*
 557  * smb_filename flags. Define in terms of the FSP_POSIX_FLAGS_XX
 558  * to keep the numeric values consistent.
 559  */
 560
 561 #define SMB_FILENAME_POSIX_PATH         FSP_POSIX_FLAGS_PATHNAMES
 562
 563 #define VFS_FIND(__fn__) while (handle->fns->__fn__##_fn==NULL) { \
 564                                 handle = handle->next; \
 565                          }
 566
 567 enum vfs_translate_direction {
 568         vfs_translate_to_unix = 0,
 569         vfs_translate_to_windows
 570 };
 571
 572 enum vfs_fallocate_flags {
 573         VFS_FALLOCATE_FL_KEEP_SIZE              = 0x0001,
 574         VFS_FALLOCATE_FL_PUNCH_HOLE             = 0x0002,
 575 };
 576
 577 /*
 578  * @VFS_COPY_CHUNK_FL_MUST_CLONE: indicates that copy_chunk_send_fn() copy must
 579  *                                be handled as a COW clone, AKA reflink.
 580  * @VFS_COPY_CHUNK_FL_MASK_ALL: all valid copychunk flags.
 581  */
 582 enum vfs_copy_chunk_flags {
 583         VFS_COPY_CHUNK_FL_MUST_CLONE            = 0x0001,
 584         VFS_COPY_CHUNK_FL_IGNORE_LOCKS          = 0x0002,
 585
 586         VFS_COPY_CHUNK_FL_MASK_ALL              =
 587                                         (VFS_COPY_CHUNK_FL_MUST_CLONE
 588                                          | VFS_COPY_CHUNK_FL_IGNORE_LOCKS),
 589 };
 590
 591 struct vfs_aio_state {
 592         int error;
 593         uint64_t duration;
 594 };
 595
 596 /*
 597     Available VFS operations. These values must be in sync with vfs_ops struct
 598     (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
 599     In particular, if new operations are added to vfs_ops, appropriate constants
 600     should be added to vfs_op_type so that order of them kept same as in vfs_ops.
 601 */
 602 struct shadow_copy_data;
 603
 604 struct vfs_fn_pointers {
 605         /* Disk operations */
 606
 607         int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
 608         void (*disconnect_fn)(struct vfs_handle_struct *handle);
 609         uint64_t (*disk_free_fn)(struct vfs_handle_struct *handle,
 610                                 const struct smb_filename *smb_fname,
 611                                 uint64_t *bsize,
 612                                 uint64_t *dfree,
 613                                 uint64_t *dsize);
 614         int (*get_quota_fn)(struct vfs_handle_struct *handle,
 615                                 const struct smb_filename *smb_fname,
 616                                 enum SMB_QUOTA_TYPE qtype,
 617                                 unid_t id,
 618                                 SMB_DISK_QUOTA *qt);
 619         int (*set_quota_fn)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
 620         int (*get_shadow_copy_data_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, struct shadow_copy_data *shadow_copy_data, bool labels);
 621         int (*statvfs_fn)(struct vfs_handle_struct *handle, const char *path, struct vfs_statvfs_struct *statbuf);
 622         uint32_t (*fs_capabilities_fn)(struct vfs_handle_struct *handle, enum timestamp_set_resolution *p_ts_res);
 623
 624         /*
 625          * Note: that "struct dfs_GetDFSReferral *r"
 626          * needs to be a valid TALLOC_CTX
 627          */
 628         NTSTATUS (*get_dfs_referrals_fn)(struct vfs_handle_struct *handle,
 629                                          struct dfs_GetDFSReferral *r);
 630
 631         /* Directory operations */
 632
 633         DIR *(*opendir_fn)(struct vfs_handle_struct *handle,
 634                                         const struct smb_filename *smb_fname,
 635                                         const char *mask,
 636                                         uint32_t attributes);
 637         DIR *(*fdopendir_fn)(struct vfs_handle_struct *handle, files_struct *fsp, const char *mask, uint32_t attributes);
 638         struct dirent *(*readdir_fn)(struct vfs_handle_struct *handle,
 639                                          DIR *dirp,
 640                                          SMB_STRUCT_STAT *sbuf);
 641         void (*seekdir_fn)(struct vfs_handle_struct *handle, DIR *dirp, long offset);
 642         long (*telldir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 643         void (*rewind_dir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 644         int (*mkdir_fn)(struct vfs_handle_struct *handle,
 645                         const struct smb_filename *smb_fname,
 646                         mode_t mode);
 647         int (*rmdir_fn)(struct vfs_handle_struct *handle,
 648                         const struct smb_filename *smb_fname);
 649         int (*closedir_fn)(struct vfs_handle_struct *handle, DIR *dir);
 650         void (*init_search_op_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 651
 652         /* File operations */
 653
 654         int (*open_fn)(struct vfs_handle_struct *handle,
 655                        struct smb_filename *smb_fname, files_struct *fsp,
 656                        int flags, mode_t mode);
 657         NTSTATUS (*create_file_fn)(struct vfs_handle_struct *handle,
 658                                    struct smb_request *req,
 659                                    uint16_t root_dir_fid,
 660                                    struct smb_filename *smb_fname,
 661                                    uint32_t access_mask,
 662                                    uint32_t share_access,
 663                                    uint32_t create_disposition,
 664                                    uint32_t create_options,
 665                                    uint32_t file_attributes,
 666                                    uint32_t oplock_request,
 667                                    struct smb2_lease *lease,
 668                                    uint64_t allocation_size,
 669                                    uint32_t private_flags,
 670                                    struct security_descriptor *sd,
 671                                    struct ea_list *ea_list,
 672                                    files_struct **result,
 673                                    int *pinfo,
 674                                    const struct smb2_create_blobs *in_context_blobs,
 675                                    struct smb2_create_blobs *out_context_blobs);
 676         int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 677         ssize_t (*read_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n);
 678         ssize_t (*pread_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n, off_t offset);
 679         struct tevent_req *(*pread_send_fn)(struct vfs_handle_struct *handle,
 680                                             TALLOC_CTX *mem_ctx,
 681                                             struct tevent_context *ev,
 682                                             struct files_struct *fsp,
 683                                             void *data,
 684                                             size_t n, off_t offset);
 685         ssize_t (*pread_recv_fn)(struct tevent_req *req, struct vfs_aio_state *state);
 686         ssize_t (*write_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n);
 687         ssize_t (*pwrite_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n, off_t offset);
 688         struct tevent_req *(*pwrite_send_fn)(struct vfs_handle_struct *handle,
 689                                              TALLOC_CTX *mem_ctx,
 690                                              struct tevent_context *ev,
 691                                              struct files_struct *fsp,
 692                                              const void *data,
 693                                              size_t n, off_t offset);
 694         ssize_t (*pwrite_recv_fn)(struct tevent_req *req, struct vfs_aio_state *state);
 695         off_t (*lseek_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset, int whence);
 696         ssize_t (*sendfile_fn)(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *header, off_t offset, size_t count);
 697         ssize_t (*recvfile_fn)(struct vfs_handle_struct *handle, int fromfd, files_struct *tofsp, off_t offset, size_t count);
 698         int (*rename_fn)(struct vfs_handle_struct *handle,
 699                          const struct smb_filename *smb_fname_src,
 700                          const struct smb_filename *smb_fname_dst);
 701         int (*fsync_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 702         struct tevent_req *(*fsync_send_fn)(struct vfs_handle_struct *handle,
 703                                             TALLOC_CTX *mem_ctx,
 704                                             struct tevent_context *ev,
 705                                             struct files_struct *fsp);
 706         int (*fsync_recv_fn)(struct tevent_req *req, struct vfs_aio_state *state);
 707         int (*stat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_fname);
 708         int (*fstat_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
 709         int (*lstat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_filename);
 710         uint64_t (*get_alloc_size_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_STAT *sbuf);
 711         int (*unlink_fn)(struct vfs_handle_struct *handle,
 712                          const struct smb_filename *smb_fname);
 713         int (*chmod_fn)(struct vfs_handle_struct *handle,
 714                         const struct smb_filename *smb_fname,
 715                         mode_t mode);
 716         int (*fchmod_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
 717         int (*chown_fn)(struct vfs_handle_struct *handle,
 718                         const struct smb_filename *smb_fname,
 719                         uid_t uid,
 720                         gid_t gid);
 721         int (*fchown_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, uid_t uid, gid_t gid);
 722         int (*lchown_fn)(struct vfs_handle_struct *handle,
 723                         const struct smb_filename *smb_fname,
 724                         uid_t uid,
 725                         gid_t gid);
 726         int (*chdir_fn)(struct vfs_handle_struct *handle, const char *path);
 727         char *(*getwd_fn)(struct vfs_handle_struct *handle);
 728         int (*ntimes_fn)(struct vfs_handle_struct *handle,
 729                          const struct smb_filename *smb_fname,
 730                          struct smb_file_time *ft);
 731         int (*ftruncate_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset);
 732         int (*fallocate_fn)(struct vfs_handle_struct *handle,
 733                             struct files_struct *fsp,
 734                             uint32_t mode,
 735                             off_t offset,
 736                             off_t len);
 737         bool (*lock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, off_t offset, off_t count, int type);
 738         int (*kernel_flock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp,
 739                                uint32_t share_mode, uint32_t access_mask);
 740         int (*linux_setlease_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int leasetype);
 741         bool (*getlock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid);
 742         int (*symlink_fn)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
 743         int (*readlink_fn)(struct vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz);
 744         int (*link_fn)(struct vfs_handle_struct *handle,
 745                                 const struct smb_filename *old_smb_fname,
 746                                 const struct smb_filename *new_smb_fname);
 747         int (*mknod_fn)(struct vfs_handle_struct *handle,
 748                                 const struct smb_filename *smb_fname,
 749                                 mode_t mode,
 750                                 SMB_DEV_T dev);
 751         char *(*realpath_fn)(struct vfs_handle_struct *handle, const char *path);
 752         int (*chflags_fn)(struct vfs_handle_struct *handle,
 753                                 const struct smb_filename *smb_fname,
 754                                 unsigned int flags);
 755         struct file_id (*file_id_create_fn)(struct vfs_handle_struct *handle,
 756                                             const SMB_STRUCT_STAT *sbuf);
 757         struct tevent_req *(*copy_chunk_send_fn)(struct vfs_handle_struct *handle,
 758                                                  TALLOC_CTX *mem_ctx,
 759                                                  struct tevent_context *ev,
 760                                                  struct files_struct *src_fsp,
 761                                                  off_t src_off,
 762                                                  struct files_struct *dest_fsp,
 763                                                  off_t dest_off,
 764                                                  off_t to_copy,
 765                                                  uint32_t flags);
 766         NTSTATUS (*copy_chunk_recv_fn)(struct vfs_handle_struct *handle,
 767                                        struct tevent_req *req,
 768                                        off_t *copied);
 769         NTSTATUS (*get_compression_fn)(struct vfs_handle_struct *handle,
 770                                        TALLOC_CTX *mem_ctx,
 771                                        struct files_struct *fsp,
 772                                        struct smb_filename *smb_fname,
 773                                        uint16_t *_compression_fmt);
 774         NTSTATUS (*set_compression_fn)(struct vfs_handle_struct *handle,
 775                                        TALLOC_CTX *mem_ctx,
 776                                        struct files_struct *fsp,
 777                                        uint16_t compression_fmt);
 778         NTSTATUS (*snap_check_path_fn)(struct vfs_handle_struct *handle,
 779                                        TALLOC_CTX *mem_ctx,
 780                                        const char *service_path,
 781                                        char **base_volume);
 782         NTSTATUS (*snap_create_fn)(struct vfs_handle_struct *handle,
 783                                    TALLOC_CTX *mem_ctx,
 784                                    const char *base_volume,
 785                                    time_t *tstamp,
 786                                    bool rw,
 787                                    char **base_path,
 788                                    char **snap_path);
 789         NTSTATUS (*snap_delete_fn)(struct vfs_handle_struct *handle,
 790                                    TALLOC_CTX *mem_ctx,
 791                                    char *base_path,
 792                                    char *snap_path);
 793
 794         NTSTATUS (*streaminfo_fn)(struct vfs_handle_struct *handle,
 795                                   struct files_struct *fsp,
 796                                   const struct smb_filename *smb_fname,
 797                                   TALLOC_CTX *mem_ctx,
 798                                   unsigned int *num_streams,
 799                                   struct stream_struct **streams);
 800
 801         int (*get_real_filename_fn)(struct vfs_handle_struct *handle,
 802                                     const char *path,
 803                                     const char *name,
 804                                     TALLOC_CTX *mem_ctx,
 805                                     char **found_name);
 806
 807         const char *(*connectpath_fn)(struct vfs_handle_struct *handle,
 808                                       const char *filename);
 809
 810         NTSTATUS (*brl_lock_windows_fn)(struct vfs_handle_struct *handle,
 811                                         struct byte_range_lock *br_lck,
 812                                         struct lock_struct *plock,
 813                                         bool blocking_lock);
 814
 815         bool (*brl_unlock_windows_fn)(struct vfs_handle_struct *handle,
 816                                       struct messaging_context *msg_ctx,
 817                                       struct byte_range_lock *br_lck,
 818                                       const struct lock_struct *plock);
 819
 820         bool (*brl_cancel_windows_fn)(struct vfs_handle_struct *handle,
 821                                       struct byte_range_lock *br_lck,
 822                                       struct lock_struct *plock);
 823
 824         bool (*strict_lock_fn)(struct vfs_handle_struct *handle,
 825                                struct files_struct *fsp,
 826                                struct lock_struct *plock);
 827
 828         void (*strict_unlock_fn)(struct vfs_handle_struct *handle,
 829                                  struct files_struct *fsp,
 830                                  struct lock_struct *plock);
 831
 832         NTSTATUS (*translate_name_fn)(struct vfs_handle_struct *handle,
 833                                       const char *name,
 834                                       enum vfs_translate_direction direction,
 835                                       TALLOC_CTX *mem_ctx,
 836                                       char **mapped_name);
 837
 838         NTSTATUS (*fsctl_fn)(struct vfs_handle_struct *handle,
 839                              struct files_struct *fsp,
 840                              TALLOC_CTX *ctx,
 841                              uint32_t function,
 842                              uint16_t req_flags,
 843                              const uint8_t *_in_data,
 844                              uint32_t in_len,
 845                              uint8_t **_out_data,
 846                              uint32_t max_out_len,
 847                              uint32_t *out_len);
 848
 849         NTSTATUS (*get_dos_attributes_fn)(struct vfs_handle_struct *handle,
 850                                           struct smb_filename *smb_fname,
 851                                           uint32_t *dosmode);
 852
 853         NTSTATUS (*fget_dos_attributes_fn)(struct vfs_handle_struct *handle,
 854                                            struct files_struct *fsp,
 855                                            uint32_t *dosmode);
 856
 857         NTSTATUS (*set_dos_attributes_fn)(struct vfs_handle_struct *handle,
 858                                           const struct smb_filename *smb_fname,
 859                                           uint32_t dosmode);
 860
 861         NTSTATUS (*fset_dos_attributes_fn)(struct vfs_handle_struct *hande,
 862                                            struct files_struct *fsp,
 863                                            uint32_t dosmode);
 864
 865         /* NT ACL operations. */
 866
 867         NTSTATUS (*fget_nt_acl_fn)(struct vfs_handle_struct *handle,
 868                                    struct files_struct *fsp,
 869                                    uint32_t security_info,
 870                                    TALLOC_CTX *mem_ctx,
 871                                    struct security_descriptor **ppdesc);
 872         NTSTATUS (*get_nt_acl_fn)(struct vfs_handle_struct *handle,
 873                                   const struct smb_filename *smb_fname,
 874                                   uint32_t security_info,
 875                                    TALLOC_CTX *mem_ctx,
 876                                   struct security_descriptor **ppdesc);
 877         NTSTATUS (*fset_nt_acl_fn)(struct vfs_handle_struct *handle,
 878                                    struct files_struct *fsp,
 879                                    uint32_t security_info_sent,
 880                                    const struct security_descriptor *psd);
 881
 882         NTSTATUS (*audit_file_fn)(struct vfs_handle_struct *handle,
 883                                   struct smb_filename *file,
 884                                   struct security_acl *sacl,
 885                                   uint32_t access_requested,
 886                                   uint32_t access_denied);
 887
 888         /* POSIX ACL operations. */
 889
 890         int (*chmod_acl_fn)(struct vfs_handle_struct *handle,
 891                                         const struct smb_filename *smb_fname,
 892                                         mode_t mode);
 893         int (*fchmod_acl_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
 894
 895         SMB_ACL_T (*sys_acl_get_file_fn)(struct vfs_handle_struct *handle,
 896                                          const struct smb_filename *smb_fname,
 897                                          SMB_ACL_TYPE_T type,
 898                                          TALLOC_CTX *mem_ctx);
 899         SMB_ACL_T (*sys_acl_get_fd_fn)(struct vfs_handle_struct *handle,
 900                                        struct files_struct *fsp,
 901                                        TALLOC_CTX *mem_ctx);
 902         int (*sys_acl_blob_get_file_fn)(struct vfs_handle_struct *handle,
 903                                         const struct smb_filename *smb_fname,
 904                                         TALLOC_CTX *mem_ctx,
 905                                         char **blob_description,
 906                                         DATA_BLOB *blob);
 907         int (*sys_acl_blob_get_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp,
 908                                       TALLOC_CTX *mem_ctx, char **blob_description,
 909                                       DATA_BLOB *blob);
 910         int (*sys_acl_set_file_fn)(struct vfs_handle_struct *handle,
 911                                         const struct smb_filename *smb_fname,
 912                                         SMB_ACL_TYPE_T acltype,
 913                                         SMB_ACL_T theacl);
 914         int (*sys_acl_set_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_ACL_T theacl);
 915         int (*sys_acl_delete_def_file_fn)(struct vfs_handle_struct *handle,
 916                                         const struct smb_filename *smb_fname);
 917
 918         /* EA operations. */
 919         ssize_t (*getxattr_fn)(struct vfs_handle_struct *handle,
 920                                         const struct smb_filename *smb_fname,
 921                                         const char *name,
 922                                         void *value,
 923                                         size_t size);
 924         ssize_t (*fgetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size);
 925         ssize_t (*listxattr_fn)(struct vfs_handle_struct *handle,
 926                                         const struct smb_filename *smb_fname,
 927                                         char *list,
 928                                         size_t size);
 929         ssize_t (*flistxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size);
 930         int (*removexattr_fn)(struct vfs_handle_struct *handle,
 931                                         const struct smb_filename *smb_fname,
 932                                         const char *name);
 933         int (*fremovexattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name);
 934         int (*setxattr_fn)(struct vfs_handle_struct *handle,
 935                                         const struct smb_filename *smb_fname,
 936                                         const char *name,
 937                                         const void *value,
 938                                         size_t size,
 939                                         int flags);
 940         int (*fsetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags);
 941
 942         /* aio operations */
 943         bool (*aio_force_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 944
 945         /* durable handle operations */
 946         NTSTATUS (*durable_cookie_fn)(struct vfs_handle_struct *handle,
 947                                       struct files_struct *fsp,
 948                                       TALLOC_CTX *mem_ctx,
 949                                       DATA_BLOB *cookie);
 950         NTSTATUS (*durable_disconnect_fn)(struct vfs_handle_struct *handle,
 951                                           struct files_struct *fsp,
 952                                           const DATA_BLOB old_cookie,
 953                                           TALLOC_CTX *mem_ctx,
 954                                           DATA_BLOB *new_cookie);
 955         NTSTATUS (*durable_reconnect_fn)(struct vfs_handle_struct *handle,
 956                                          struct smb_request *smb1req,
 957                                          struct smbXsrv_open *op,
 958                                          const DATA_BLOB old_cookie,
 959                                          TALLOC_CTX *mem_ctx,
 960                                          struct files_struct **fsp,
 961                                          DATA_BLOB *new_cookie);
 962
 963         NTSTATUS (*readdir_attr_fn)(struct vfs_handle_struct *handle,
 964                                     const struct smb_filename *fname,
 965                                     TALLOC_CTX *mem_ctx,
 966                                     struct readdir_attr_data **attr_data);
 967 };
 968
 969 /*
 970     VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
 971     which describes all operations this module is willing to intercept.
 972     VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
 973     using this information.
 974 */
 975
 976 typedef struct vfs_handle_struct {
 977         struct vfs_handle_struct  *next, *prev;
 978         const char *param;
 979         struct connection_struct *conn;
 980         const struct vfs_fn_pointers *fns;
 981         void *data;
 982         void (*free_data)(void **data);
 983 } vfs_handle_struct;
 984
 985
 986 typedef struct vfs_statvfs_struct {
 987         /* For undefined recommended transfer size return -1 in that field */
 988         uint32_t OptimalTransferSize;  /* bsize on some os, iosize on other os */
 989         uint32_t BlockSize;
 990
 991         /*
 992          The next three fields are in terms of the block size.
 993          (above). If block size is unknown, 4096 would be a
 994          reasonable block size for a server to report.
 995          Note that returning the blocks/blocksavail removes need
 996          to make a second call (to QFSInfo level 0x103 to get this info.
 997          UserBlockAvail is typically less than or equal to BlocksAvail,
 998          if no distinction is made return the same value in each.
 999         */
1000
1001         uint64_t TotalBlocks;
1002         uint64_t BlocksAvail;       /* bfree */
1003         uint64_t UserBlocksAvail;   /* bavail */
1004
1005         /* For undefined Node fields or FSID return -1 */
1006         uint64_t TotalFileNodes;
1007         uint64_t FreeFileNodes;
1008         uint64_t FsIdentifier;   /* fsid */
1009         /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
1010         /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call   */
1011
1012         int FsCapabilities;
1013 } vfs_statvfs_struct;
1014
1015 /* Add a new FSP extension of the given type. Returns a pointer to the
1016  * extenstion data.
1017  */
1018 #define VFS_ADD_FSP_EXTENSION(handle, fsp, type, destroy_fn)            \
1019     vfs_add_fsp_extension_notype(handle, (fsp), sizeof(type), (destroy_fn))
1020
1021 /* Return a pointer to the existing FSP extension data. */
1022 #define VFS_FETCH_FSP_EXTENSION(handle, fsp) \
1023     vfs_fetch_fsp_extension(handle, (fsp))
1024
1025 /* Return the talloc context associated with an FSP extension. */
1026 #define VFS_MEMCTX_FSP_EXTENSION(handle, fsp) \
1027     vfs_memctx_fsp_extension(handle, (fsp))
1028
1029 /* Remove and destroy an FSP extension. */
1030 #define VFS_REMOVE_FSP_EXTENSION(handle, fsp) \
1031     vfs_remove_fsp_extension((handle), (fsp))
1032
1033 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
1034         if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
1035                 DEBUG(0,("%s() failed to get vfs_handle->data!\n",__FUNCTION__)); \
1036                 ret; \
1037         } \
1038 }
1039
1040 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
1041         if (!(handle)) { \
1042                 DEBUG(0,("%s() failed to set handle->data!\n",__FUNCTION__)); \
1043                 ret; \
1044         } else { \
1045                 if ((handle)->free_data) { \
1046                         (handle)->free_data(&(handle)->data); \
1047                 } \
1048                 (handle)->data = (void *)datap; \
1049                 (handle)->free_data = free_fn; \
1050         } \
1051 }
1052
1053 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
1054         if ((handle) && (handle)->free_data) { \
1055                 (handle)->free_data(&(handle)->data); \
1056         } \
1057 }
1058
1059 /* Check whether module-specific data handle was already allocated or not */
1060 #define SMB_VFS_HANDLE_TEST_DATA(handle)  ( !(handle) || !(handle)->data ? False : True )
1061
1062 #define SMB_VFS_OP(x) ((void *) x)
1063
1064 #define DEFAULT_VFS_MODULE_NAME "/[Default VFS]/"
1065
1066 #include "vfs_macros.h"
1067
1068 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
1069                          const char *service, const char *user);
1070 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle);
1071 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
1072                                 const struct smb_filename *smb_filename,
1073                                 uint64_t *bsize,
1074                                 uint64_t *dfree,
1075                                 uint64_t *dsize);
1076 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
1077                                 const struct smb_filename *smb_filename,
1078                                 enum SMB_QUOTA_TYPE qtype,
1079                                 unid_t id,
1080                                 SMB_DISK_QUOTA *qt);
1081 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
1082                            enum SMB_QUOTA_TYPE qtype, unid_t id,
1083                            SMB_DISK_QUOTA *qt);
1084 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
1085                                       struct files_struct *fsp,
1086                                       struct shadow_copy_data *shadow_copy_data,
1087                                       bool labels);
1088 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle, const char *path,
1089                          struct vfs_statvfs_struct *statbuf);
1090 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
1091                                       enum timestamp_set_resolution *p_ts_res);
1092 /*
1093  * Note: that "struct dfs_GetDFSReferral *r" needs to be a valid TALLOC_CTX
1094  */
1095 NTSTATUS smb_vfs_call_get_dfs_referrals(struct vfs_handle_struct *handle,
1096                                         struct dfs_GetDFSReferral *r);
1097 DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
1098                         const struct smb_filename *smb_fname,
1099                         const char *mask,
1100                         uint32_t attributes);
1101 DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
1102                                         struct files_struct *fsp,
1103                                         const char *mask,
1104                                         uint32_t attributes);
1105 struct dirent *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1106                                         DIR *dirp,
1107                                         SMB_STRUCT_STAT *sbuf);
1108 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
1109                           DIR *dirp, long offset);
1110 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
1111                           DIR *dirp);
1112 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1113                              DIR *dirp);
1114 int smb_vfs_call_mkdir(struct vfs_handle_struct *handle,
1115                         const struct smb_filename *smb_fname,
1116                         mode_t mode);
1117 int smb_vfs_call_rmdir(struct vfs_handle_struct *handle,
1118                         const struct smb_filename *smb_fname);
1119 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1120                           DIR *dir);
1121 void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
1122                                  DIR *dirp);
1123 int smb_vfs_call_open(struct vfs_handle_struct *handle,
1124                       struct smb_filename *smb_fname, struct files_struct *fsp,
1125                       int flags, mode_t mode);
1126 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1127                                   struct smb_request *req,
1128                                   uint16_t root_dir_fid,
1129                                   struct smb_filename *smb_fname,
1130                                   uint32_t access_mask,
1131                                   uint32_t share_access,
1132                                   uint32_t create_disposition,
1133                                   uint32_t create_options,
1134                                   uint32_t file_attributes,
1135                                   uint32_t oplock_request,
1136                                   struct smb2_lease *lease,
1137                                   uint64_t allocation_size,
1138                                   uint32_t private_flags,
1139                                   struct security_descriptor *sd,
1140                                   struct ea_list *ea_list,
1141                                   files_struct **result,
1142                                   int *pinfo,
1143                                   const struct smb2_create_blobs *in_context_blobs,
1144                                   struct smb2_create_blobs *out_context_blobs);
1145 int smb_vfs_call_close(struct vfs_handle_struct *handle,
1146                        struct files_struct *fsp);
1147 ssize_t smb_vfs_call_read(struct vfs_handle_struct *handle,
1148                           struct files_struct *fsp, void *data, size_t n);
1149 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1150                            struct files_struct *fsp, void *data, size_t n,
1151                            off_t offset);
1152 struct tevent_req *smb_vfs_call_pread_send(struct vfs_handle_struct *handle,
1153                                            TALLOC_CTX *mem_ctx,
1154                                            struct tevent_context *ev,
1155                                            struct files_struct *fsp,
1156                                            void *data,
1157                                            size_t n, off_t offset);
1158 ssize_t SMB_VFS_PREAD_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1159
1160 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
1161                            struct files_struct *fsp, const void *data,
1162                            size_t n);
1163 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1164                             struct files_struct *fsp, const void *data,
1165                             size_t n, off_t offset);
1166 struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
1167                                             TALLOC_CTX *mem_ctx,
1168                                             struct tevent_context *ev,
1169                                             struct files_struct *fsp,
1170                                             const void *data,
1171                                             size_t n, off_t offset);
1172 ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1173
1174 off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1175                              struct files_struct *fsp, off_t offset,
1176                              int whence);
1177 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1178                               files_struct *fromfsp, const DATA_BLOB *header,
1179                               off_t offset, size_t count);
1180 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1181                               files_struct *tofsp, off_t offset,
1182                               size_t count);
1183 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
1184                         const struct smb_filename *smb_fname_src,
1185                         const struct smb_filename *smb_fname_dst);
1186 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
1187                        struct files_struct *fsp);
1188
1189 struct tevent_req *smb_vfs_call_fsync_send(struct vfs_handle_struct *handle,
1190                                            TALLOC_CTX *mem_ctx,
1191                                            struct tevent_context *ev,
1192                                            struct files_struct *fsp);
1193 int SMB_VFS_FSYNC_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1194
1195 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1196                       struct smb_filename *smb_fname);
1197 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1198                        struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
1199 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1200                        struct smb_filename *smb_filename);
1201 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1202                                      struct files_struct *fsp,
1203                                      const SMB_STRUCT_STAT *sbuf);
1204 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
1205                         const struct smb_filename *smb_fname);
1206 int smb_vfs_call_chmod(struct vfs_handle_struct *handle,
1207                         const struct smb_filename *smb_fname,
1208                         mode_t mode);
1209 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1210                         struct files_struct *fsp, mode_t mode);
1211 int smb_vfs_call_chown(struct vfs_handle_struct *handle,
1212                         const struct smb_filename *smb_fname,
1213                         uid_t uid,
1214                         gid_t gid);
1215 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1216                         struct files_struct *fsp, uid_t uid, gid_t gid);
1217 int smb_vfs_call_lchown(struct vfs_handle_struct *handle,
1218                         const struct smb_filename *smb_fname,
1219                         uid_t uid,
1220                         gid_t gid);
1221 int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path);
1222 char *smb_vfs_call_getwd(struct vfs_handle_struct *handle);
1223 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
1224                         const struct smb_filename *smb_fname,
1225                         struct smb_file_time *ft);
1226 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
1227                            struct files_struct *fsp, off_t offset);
1228 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
1229                            struct files_struct *fsp,
1230                            uint32_t mode,
1231                            off_t offset,
1232                            off_t len);
1233 bool smb_vfs_call_lock(struct vfs_handle_struct *handle,
1234                        struct files_struct *fsp, int op, off_t offset,
1235                        off_t count, int type);
1236 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
1237                               struct files_struct *fsp, uint32_t share_mode,
1238                               uint32_t access_mask);
1239 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
1240                                 struct files_struct *fsp, int leasetype);
1241 bool smb_vfs_call_getlock(struct vfs_handle_struct *handle,
1242                           struct files_struct *fsp, off_t *poffset,
1243                           off_t *pcount, int *ptype, pid_t *ppid);
1244 int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
1245                          const char *newpath);
1246 int smb_vfs_call_readlink(struct vfs_handle_struct *handle,
1247                           const char *path, char *buf, size_t bufsiz);
1248 int smb_vfs_call_link(struct vfs_handle_struct *handle,
1249                         const struct smb_filename *old_smb_fname,
1250                         const struct smb_filename *new_smb_fname);
1251 int smb_vfs_call_mknod(struct vfs_handle_struct *handle,
1252                         const struct smb_filename *smb_fname,
1253                         mode_t mode,
1254                         SMB_DEV_T dev);
1255 char *smb_vfs_call_realpath(struct vfs_handle_struct *handle, const char *path);
1256 int smb_vfs_call_chflags(struct vfs_handle_struct *handle,
1257                         const struct smb_filename *smb_fname,
1258                         unsigned int flags);
1259 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
1260                                            const SMB_STRUCT_STAT *sbuf);
1261 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
1262                                  struct files_struct *fsp,
1263                                  const struct smb_filename *smb_fname,
1264                                  TALLOC_CTX *mem_ctx,
1265                                  unsigned int *num_streams,
1266                                  struct stream_struct **streams);
1267 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
1268                                    const char *path, const char *name,
1269                                    TALLOC_CTX *mem_ctx, char **found_name);
1270 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
1271                                      const char *filename);
1272 NTSTATUS smb_vfs_call_brl_lock_windows(struct vfs_handle_struct *handle,
1273                                        struct byte_range_lock *br_lck,
1274                                        struct lock_struct *plock,
1275                                        bool blocking_lock);
1276 bool smb_vfs_call_brl_unlock_windows(struct vfs_handle_struct *handle,
1277                                      struct messaging_context *msg_ctx,
1278                                      struct byte_range_lock *br_lck,
1279                                      const struct lock_struct *plock);
1280 bool smb_vfs_call_brl_cancel_windows(struct vfs_handle_struct *handle,
1281                                      struct byte_range_lock *br_lck,
1282                                      struct lock_struct *plock);
1283 bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
1284                               struct files_struct *fsp,
1285                               struct lock_struct *plock);
1286 void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
1287                                 struct files_struct *fsp,
1288                                 struct lock_struct *plock);
1289 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
1290                                      const char *name,
1291                                      enum vfs_translate_direction direction,
1292                                      TALLOC_CTX *mem_ctx,
1293                                      char **mapped_name);
1294 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
1295                             struct files_struct *fsp,
1296                             TALLOC_CTX *ctx,
1297                             uint32_t function,
1298                             uint16_t req_flags,
1299                             const uint8_t *_in_data,
1300                             uint32_t in_len,
1301                             uint8_t **_out_data,
1302                             uint32_t max_out_len,
1303                             uint32_t *out_len);
1304 NTSTATUS smb_vfs_call_get_dos_attributes(struct vfs_handle_struct *handle,
1305                                          struct smb_filename *smb_fname,
1306                                          uint32_t *dosmode);
1307 NTSTATUS smb_vfs_call_fget_dos_attributes(struct vfs_handle_struct *handle,
1308                                           struct files_struct *fsp,
1309                                           uint32_t *dosmode);
1310 NTSTATUS smb_vfs_call_set_dos_attributes(struct vfs_handle_struct *handle,
1311                                          const struct smb_filename *smb_fname,
1312                                          uint32_t dosmode);
1313 NTSTATUS smb_vfs_call_fset_dos_attributes(struct vfs_handle_struct *handle,
1314                                           struct files_struct *fsp,
1315                                           uint32_t dosmode);
1316 struct tevent_req *smb_vfs_call_copy_chunk_send(struct vfs_handle_struct *handle,
1317                                                 TALLOC_CTX *mem_ctx,
1318                                                 struct tevent_context *ev,
1319                                                 struct files_struct *src_fsp,
1320                                                 off_t src_off,
1321                                                 struct files_struct *dest_fsp,
1322                                                 off_t dest_off,
1323                                                 off_t num,
1324                                                 uint32_t flags);
1325 NTSTATUS smb_vfs_call_copy_chunk_recv(struct vfs_handle_struct *handle,
1326                                       struct tevent_req *req,
1327                                       off_t *copied);
1328 NTSTATUS smb_vfs_call_get_compression(struct vfs_handle_struct *handle,
1329                                       TALLOC_CTX *mem_ctx,
1330                                       struct files_struct *fsp,
1331                                       struct smb_filename *smb_fname,
1332                                       uint16_t *_compression_fmt);
1333 NTSTATUS smb_vfs_call_set_compression(struct vfs_handle_struct *handle,
1334                                       TALLOC_CTX *mem_ctx,
1335                                       struct files_struct *fsp,
1336                                       uint16_t compression_fmt);
1337 NTSTATUS smb_vfs_call_snap_check_path(vfs_handle_struct *handle,
1338                                       TALLOC_CTX *mem_ctx,
1339                                       const char *service_path,
1340                                       char **base_volume);
1341 NTSTATUS smb_vfs_call_snap_create(struct vfs_handle_struct *handle,
1342                                   TALLOC_CTX *mem_ctx,
1343                                   const char *base_volume,
1344                                   time_t *tstamp,
1345                                   bool rw,
1346                                   char **base_path,
1347                                   char **snap_path);
1348 NTSTATUS smb_vfs_call_snap_delete(struct vfs_handle_struct *handle,
1349                                   TALLOC_CTX *mem_ctx,
1350                                   char *base_path,
1351                                   char *snap_path);
1352 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
1353                                   struct files_struct *fsp,
1354                                   uint32_t security_info,
1355                                   TALLOC_CTX *mem_ctx,
1356                                   struct security_descriptor **ppdesc);
1357 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
1358                                  const struct smb_filename *smb_fname,
1359                                  uint32_t security_info,
1360                                  TALLOC_CTX *mem_ctx,
1361                                  struct security_descriptor **ppdesc);
1362 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
1363                                   struct files_struct *fsp,
1364                                   uint32_t security_info_sent,
1365                                   const struct security_descriptor *psd);
1366 NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
1367                                  struct smb_filename *file,
1368                                  struct security_acl *sacl,
1369                                  uint32_t access_requested,
1370                                  uint32_t access_denied);
1371 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle,
1372                                 const struct smb_filename *file,
1373                                 mode_t mode);
1374 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
1375                             struct files_struct *fsp, mode_t mode);
1376 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
1377                                         const struct smb_filename *smb_fname,
1378                                         SMB_ACL_TYPE_T type,
1379                                         TALLOC_CTX *mem_ctx);
1380 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
1381                                       struct files_struct *fsp,
1382                                       TALLOC_CTX *mem_ctx);
1383 int smb_vfs_call_sys_acl_blob_get_file(struct vfs_handle_struct *handle,
1384                                        const struct smb_filename *smb_fname,
1385                                        TALLOC_CTX *mem_ctx,
1386                                        char **blob_description,
1387                                        DATA_BLOB *blob);
1388 int smb_vfs_call_sys_acl_blob_get_fd(struct vfs_handle_struct *handle,
1389                                      struct files_struct *fsp,
1390                                      TALLOC_CTX *mem_ctx,
1391                                      char **blob_description,
1392                                      DATA_BLOB *blob);
1393 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
1394                                 const struct smb_filename *smb_fname,
1395                                 SMB_ACL_TYPE_T acltype,
1396                                 SMB_ACL_T theacl);
1397 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
1398                                 struct files_struct *fsp, SMB_ACL_T theacl);
1399 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1400                                 const struct smb_filename *smb_fname);
1401 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
1402                                 const struct smb_filename *smb_fname,
1403                                 const char *name,
1404                                 void *value,
1405                                 size_t size);
1406 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
1407                                struct files_struct *fsp, const char *name,
1408                                void *value, size_t size);
1409 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
1410                                 const struct smb_filename *smb_fname,
1411                                 char *list,
1412                                 size_t size);
1413 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
1414                                 struct files_struct *fsp, char *list,
1415                                 size_t size);
1416 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
1417                                 const struct smb_filename *smb_fname,
1418                                 const char *name);
1419 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
1420                               struct files_struct *fsp, const char *name);
1421 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle,
1422                                 const struct smb_filename *smb_fname,
1423                                 const char *name,
1424                                 const void *value,
1425                                 size_t size,
1426                                 int flags);
1427 int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
1428                            const char *name, const void *value, size_t size,
1429                            int flags);
1430 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
1431                            struct files_struct *fsp, const char *name,
1432                            const void *value, size_t size, int flags);
1433 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
1434                             struct files_struct *fsp);
1435 bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
1436                              const struct smb_filename *fname,
1437                              SMB_STRUCT_STAT *sbuf);
1438 int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
1439                              const struct smb_filename *fname);
1440 NTSTATUS smb_vfs_call_durable_cookie(struct vfs_handle_struct *handle,
1441                                      struct files_struct *fsp,
1442                                      TALLOC_CTX *mem_ctx,
1443                                      DATA_BLOB *cookie);
1444 NTSTATUS smb_vfs_call_durable_disconnect(struct vfs_handle_struct *handle,
1445                                          struct files_struct *fsp,
1446                                          const DATA_BLOB old_cookie,
1447                                          TALLOC_CTX *mem_ctx,
1448                                          DATA_BLOB *new_cookie);
1449 NTSTATUS smb_vfs_call_durable_reconnect(struct vfs_handle_struct *handle,
1450                                         struct smb_request *smb1req,
1451                                         struct smbXsrv_open *op,
1452                                         const DATA_BLOB old_cookie,
1453                                         TALLOC_CTX *mem_ctx,
1454                                         struct files_struct **fsp,
1455                                         DATA_BLOB *new_cookie);
1456 NTSTATUS smb_vfs_call_readdir_attr(struct vfs_handle_struct *handle,
1457                                    const struct smb_filename *fname,
1458                                    TALLOC_CTX *mem_ctx,
1459                                    struct readdir_attr_data **attr_data);
1460
1461 NTSTATUS smb_register_vfs(int version, const char *name,
1462                           const struct vfs_fn_pointers *fns);
1463 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
1464                                    files_struct *fsp, size_t ext_size,
1465                                    void (*destroy_fn)(void *p_data));
1466 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1467 void vfs_remove_all_fsp_extensions(struct files_struct *fsp);
1468 void *vfs_memctx_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1469 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1470
1471 void smb_vfs_assert_all_fns(const struct vfs_fn_pointers* fns,
1472                             const char *module);
1473
1474 #endif /* _VFS_H */