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 /* Version 37 - Change statvfs from const char *
 226                 to const struct smb_filename * */
 227 /* Version 37 - Change readlink from const char *
 228                 to const struct smb_filename * */
 229 /* Version 37 - Change symlink from const char *
 230                 to const struct smb_filename * */
 231 /* Version 37 - Change chdir from const char *
 232                 to const struct smb_filename * */
 233 /* Version 37 - Change getwd from char *
 234                 to const struct smb_filename * */
 235 /* Version 37 - Change conn->cwd from char *
 236                 to struct smb_filename * */
 237 /* Version 37 - Change realpath from char *
 238                 to struct smb_filename * */
 239 /* Version 37 - Change connectpath from char *
 240                 to struct smb_filename * */
 241 /* Version 37 - Add SMB_VFS_OFFLOAD_READ_SEND/RECV */
 242 /* Version 37 - Rename SMB_VFS_COPY_CHUNK_SEND/RECV to
 243                 SMB_VFS_OFFLOAD_READ_SEND/RECV */
 244 /* Version 37 - Remove SMB_VFS_STRICT_UNLOCK */
 245 /* Version 37 - Rename SMB_VFS_STRICT_LOCK to
 246                 SMB_VFS_STRICT_LOCK_CHECK */
 247 /* Version 38 - Remove SMB_VFS_INIT_SEARCH_OP */
 248
 249 #define SMB_VFS_INTERFACE_VERSION 38
 250
 251 /*
 252     All intercepted VFS operations must be declared as static functions inside module source
 253     in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
 254     example VFS modules for more details.
 255 */
 256
 257 /* VFS operations structure */
 258
 259 struct vfs_handle_struct;
 260 struct connection_struct;
 261 struct files_struct;
 262 struct security_descriptor;
 263 struct vfs_statvfs_struct;
 264 struct smb_request;
 265 struct ea_list;
 266 struct smb_file_time;
 267 struct blocking_lock_record;
 268 struct smb_filename;
 269 struct dfs_GetDFSReferral;
 270
 271 typedef union unid_t {
 272         uid_t uid;
 273         gid_t gid;
 274 } unid_t;
 275
 276 struct fd_handle {
 277         size_t ref_count;
 278         int fd;
 279         uint64_t position_information;
 280         off_t pos;
 281         uint32_t private_options;       /* NT Create options, but we only look at
 282                                  * NTCREATEX_OPTIONS_PRIVATE_DENY_DOS and
 283                                  * NTCREATEX_OPTIONS_PRIVATE_DENY_FCB and
 284                                  * NTCREATEX_OPTIONS_PRIVATE_DELETE_ON_CLOSE
 285                                  * for print files *only*, where
 286                                  * DELETE_ON_CLOSE is not stored in the share
 287                                  * mode database.
 288                                  */
 289         unsigned long gen_id;
 290 };
 291
 292 struct fsp_lease {
 293         size_t ref_count;
 294         struct smbd_server_connection *sconn;
 295         struct tevent_timer *timeout;
 296         struct smb2_lease lease;
 297 };
 298
 299 typedef struct files_struct {
 300         struct files_struct *next, *prev;
 301         uint64_t fnum;
 302         struct smbXsrv_open *op;
 303         struct connection_struct *conn;
 304         struct fd_handle *fh;
 305         unsigned int num_smb_operations;
 306         struct file_id file_id;
 307         uint64_t initial_allocation_size; /* Faked up initial allocation on disk. */
 308         uint16_t file_pid;
 309         uint64_t vuid; /* SMB2 compat */
 310         struct write_cache *wcp;
 311         struct timeval open_time;
 312         uint32_t access_mask;           /* NTCreateX access bits (FILE_READ_DATA etc.) */
 313         uint32_t share_access;          /* NTCreateX share constants (FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE). */
 314
 315         bool kernel_share_modes_taken;
 316
 317         bool update_write_time_triggered;
 318         struct tevent_timer *update_write_time_event;
 319         bool update_write_time_on_close;
 320         struct timespec close_write_time;
 321         bool write_time_forced;
 322
 323         int oplock_type;
 324         struct fsp_lease *lease;
 325         int sent_oplock_break;
 326         struct tevent_timer *oplock_timeout;
 327         struct lock_struct last_lock_failure;
 328         int current_lock_count; /* Count the number of outstanding locks and pending locks. */
 329
 330         bool can_lock;
 331         bool can_read;
 332         bool can_write;
 333         bool modified;
 334         bool is_directory;
 335         bool aio_write_behind;
 336         bool initial_delete_on_close; /* Only set at NTCreateX if file was created. */
 337         bool delete_on_close;
 338         uint64_t posix_flags;
 339         bool is_sparse;
 340         bool backup_intent; /* Handle was successfully opened with backup intent
 341                                 and opener has privilege to do so. */
 342         bool use_ofd_locks; /* Are we using open file description locks ? */
 343         struct smb_filename *fsp_name;
 344         uint32_t name_hash;             /* Jenkins hash of full pathname. */
 345         uint64_t mid;                   /* Mid of the operation that created us. */
 346
 347         struct vfs_fsp_data *vfs_extension;
 348         struct fake_file_handle *fake_file_handle;
 349
 350         struct notify_change_buf *notify;
 351
 352         struct files_struct *base_fsp; /* placeholder for delete on close */
 353
 354         /*
 355          * Read-only cached brlock record, thrown away when the
 356          * brlock.tdb seqnum changes. This avoids fetching data from
 357          * the brlock.tdb on every read/write call.
 358          */
 359         int brlock_seqnum;
 360         struct byte_range_lock *brlock_rec;
 361
 362         struct dptr_struct *dptr;
 363
 364         /* if not NULL, means this is a print file */
 365         struct print_file_data *print_file;
 366
 367         unsigned num_aio_requests;
 368         struct tevent_req **aio_requests;
 369
 370         /*
 371          * If a close request comes in while we still have aio_requests
 372          * around, we need to hold back the close. When all aio_requests are
 373          * done, the aio completion routines need tevent_wait_done() on
 374          * this. A bit ugly, but before we have close_file() fully async
 375          * possibly the simplest approach. Thanks, Jeremy for the idea.
 376          */
 377         struct tevent_req *deferred_close;
 378 } files_struct;
 379
 380 #define FSP_POSIX_FLAGS_OPEN            0x01
 381 #define FSP_POSIX_FLAGS_RENAME          0x02
 382 #define FSP_POSIX_FLAGS_PATHNAMES       0x04
 383
 384 #define FSP_POSIX_FLAGS_ALL                     \
 385         (FSP_POSIX_FLAGS_OPEN |                 \
 386          FSP_POSIX_FLAGS_PATHNAMES |            \
 387          FSP_POSIX_FLAGS_RENAME)
 388
 389 struct vuid_cache_entry {
 390         struct auth_session_info *session_info;
 391         uint64_t vuid; /* SMB2 compat */
 392         bool read_only;
 393         uint32_t share_access;
 394 };
 395
 396 struct vuid_cache {
 397         unsigned int next_entry;
 398         struct vuid_cache_entry array[VUID_CACHE_SIZE];
 399 };
 400
 401 typedef struct {
 402         char *name;
 403         bool is_wild;
 404 } name_compare_entry;
 405
 406 struct dfree_cached_info {
 407         time_t last_dfree_time;
 408         uint64_t dfree_ret;
 409         uint64_t bsize;
 410         uint64_t dfree;
 411         uint64_t dsize;
 412 };
 413
 414 struct share_params {
 415         int service;
 416 };
 417
 418 typedef struct connection_struct {
 419         struct connection_struct *next, *prev;
 420         struct smbd_server_connection *sconn; /* can be NULL */
 421         struct smbXsrv_tcon *tcon; /* can be NULL */
 422         uint32_t cnum; /* an index passed over the wire */
 423         struct share_params *params;
 424         bool force_user;
 425         struct vuid_cache *vuid_cache;
 426         bool printer;
 427         bool ipc;
 428         bool read_only; /* Attributes for the current user of the share. */
 429         uint32_t share_access;
 430         /* Does this filesystem honor
 431            sub second timestamps on files
 432            and directories when setting time ? */
 433         enum timestamp_set_resolution ts_res;
 434         char *connectpath;
 435         char *origpath;
 436         struct smb_filename *cwd_fname; /* Working directory. */
 437
 438         struct vfs_handle_struct *vfs_handles;          /* for the new plugins */
 439
 440         /*
 441          * This represents the user information on this connection. Depending
 442          * on the vuid using this tid, this might change per SMB request.
 443          */
 444         struct auth_session_info *session_info;
 445
 446         /*
 447          * If the "force group" parameter is set, this is the primary gid that
 448          * may be used in the users token, depending on the vuid using this tid.
 449          */
 450         gid_t force_group_gid;
 451
 452         uint64_t vuid; /* vuid of user who *opened* this connection, or UID_FIELD_INVALID */
 453
 454         time_t lastused;
 455         time_t lastused_count;
 456         int num_files_open;
 457         unsigned int num_smb_operations; /* Count of smb operations on this tree. */
 458         int encrypt_level;
 459         bool encrypted_tid;
 460
 461         /* Semantics requested by the client or forced by the server config. */
 462         bool case_sensitive;
 463         bool case_preserve;
 464         bool short_case_preserve;
 465
 466         /* Semantics provided by the underlying filesystem. */
 467         int fs_capabilities;
 468         /* Device number of the directory of the share mount.
 469            Used to ensure unique FileIndex returns. */
 470         SMB_DEV_T base_share_dev;
 471
 472         name_compare_entry *hide_list; /* Per-share list of files to return as hidden. */
 473         name_compare_entry *veto_list; /* Per-share list of files to veto (never show). */
 474         name_compare_entry *veto_oplock_list; /* Per-share list of files to refuse oplocks on. */
 475         name_compare_entry *aio_write_behind_list; /* Per-share list of files to use aio write behind on. */
 476         struct dfree_cached_info *dfree_info;
 477         struct trans_state *pending_trans;
 478
 479         struct rpc_pipe_client *spoolss_pipe;
 480
 481 } connection_struct;
 482
 483 struct smbd_smb2_request;
 484 struct privilege_paths;
 485
 486 struct smb_request {
 487         uint8_t cmd;
 488         uint16_t flags2;
 489         uint16_t smbpid;
 490         uint64_t mid; /* For compatibility with SMB2. */
 491         uint32_t seqnum;
 492         uint64_t vuid; /* For compatibility with SMB2. */
 493         uint32_t tid;
 494         uint8_t  wct;
 495         const uint16_t *vwv;
 496         uint16_t buflen;
 497         const uint8_t *buf;
 498         const uint8_t *inbuf;
 499
 500         /*
 501          * Async handling in the main smb processing loop is directed by
 502          * outbuf: reply_xxx routines indicate sync behaviour by putting their
 503          * reply into "outbuf". If they leave it as NULL, they take care of it
 504          * themselves, possibly later.
 505          *
 506          * If async handling is wanted, the reply_xxx routine must make sure
 507          * that it talloc_move()s the smb_req somewhere else.
 508          */
 509         uint8_t *outbuf;
 510
 511         size_t unread_bytes;
 512         bool encrypted;
 513         connection_struct *conn;
 514         struct smbd_server_connection *sconn;
 515         struct smbXsrv_connection *xconn;
 516         struct smb_perfcount_data pcd;
 517
 518         /*
 519          * Chained request handling
 520          */
 521         struct files_struct *chain_fsp;
 522
 523         /*
 524          * state information for async smb handling
 525          */
 526         void *async_priv;
 527
 528         /*
 529          * Back pointer to smb2 request.
 530          */
 531         struct smbd_smb2_request *smb2req;
 532
 533         /*
 534          * Pathnames used if request done
 535          * under privilege.
 536          */
 537         struct privilege_paths *priv_paths;
 538
 539         /*
 540          * Request list for chained requests, we're part of it.
 541          */
 542         struct smb_request **chain;
 543
 544         struct timeval request_time;
 545
 546         bool posix_pathnames;
 547 };
 548
 549 /*
 550  * Info about an alternate data stream
 551  */
 552
 553 struct stream_struct {
 554         off_t size;
 555         off_t alloc_size;
 556         char *name;
 557 };
 558
 559 /* time info */
 560 struct smb_file_time {
 561         struct timespec mtime;
 562         struct timespec atime;
 563         struct timespec ctime;
 564         struct timespec create_time;
 565 };
 566
 567 /*
 568  * smb_filename
 569  */
 570 struct smb_filename {
 571         char *base_name;
 572         char *stream_name;
 573         char *original_lcomp;
 574         uint32_t flags;
 575         SMB_STRUCT_STAT st;
 576 };
 577
 578 /*
 579  * smb_filename flags. Define in terms of the FSP_POSIX_FLAGS_XX
 580  * to keep the numeric values consistent.
 581  */
 582
 583 #define SMB_FILENAME_POSIX_PATH         FSP_POSIX_FLAGS_PATHNAMES
 584
 585 #define VFS_FIND(__fn__) while (handle->fns->__fn__##_fn==NULL) { \
 586                                 handle = handle->next; \
 587                          }
 588
 589 enum vfs_translate_direction {
 590         vfs_translate_to_unix = 0,
 591         vfs_translate_to_windows
 592 };
 593
 594 enum vfs_fallocate_flags {
 595         VFS_FALLOCATE_FL_KEEP_SIZE              = 0x0001,
 596         VFS_FALLOCATE_FL_PUNCH_HOLE             = 0x0002,
 597 };
 598
 599 struct vfs_aio_state {
 600         int error;
 601         uint64_t duration;
 602 };
 603
 604 /*
 605     Available VFS operations. These values must be in sync with vfs_ops struct
 606     (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
 607     In particular, if new operations are added to vfs_ops, appropriate constants
 608     should be added to vfs_op_type so that order of them kept same as in vfs_ops.
 609 */
 610 struct shadow_copy_data;
 611
 612 struct vfs_fn_pointers {
 613         /* Disk operations */
 614
 615         int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
 616         void (*disconnect_fn)(struct vfs_handle_struct *handle);
 617         uint64_t (*disk_free_fn)(struct vfs_handle_struct *handle,
 618                                 const struct smb_filename *smb_fname,
 619                                 uint64_t *bsize,
 620                                 uint64_t *dfree,
 621                                 uint64_t *dsize);
 622         int (*get_quota_fn)(struct vfs_handle_struct *handle,
 623                                 const struct smb_filename *smb_fname,
 624                                 enum SMB_QUOTA_TYPE qtype,
 625                                 unid_t id,
 626                                 SMB_DISK_QUOTA *qt);
 627         int (*set_quota_fn)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
 628         int (*get_shadow_copy_data_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, struct shadow_copy_data *shadow_copy_data, bool labels);
 629         int (*statvfs_fn)(struct vfs_handle_struct *handle,
 630                                 const struct smb_filename *smb_fname,
 631                                 struct vfs_statvfs_struct *statbuf);
 632         uint32_t (*fs_capabilities_fn)(struct vfs_handle_struct *handle, enum timestamp_set_resolution *p_ts_res);
 633
 634         /*
 635          * Note: that "struct dfs_GetDFSReferral *r"
 636          * needs to be a valid TALLOC_CTX
 637          */
 638         NTSTATUS (*get_dfs_referrals_fn)(struct vfs_handle_struct *handle,
 639                                          struct dfs_GetDFSReferral *r);
 640
 641         /* Directory operations */
 642
 643         DIR *(*opendir_fn)(struct vfs_handle_struct *handle,
 644                                         const struct smb_filename *smb_fname,
 645                                         const char *mask,
 646                                         uint32_t attributes);
 647         DIR *(*fdopendir_fn)(struct vfs_handle_struct *handle, files_struct *fsp, const char *mask, uint32_t attributes);
 648         struct dirent *(*readdir_fn)(struct vfs_handle_struct *handle,
 649                                          DIR *dirp,
 650                                          SMB_STRUCT_STAT *sbuf);
 651         void (*seekdir_fn)(struct vfs_handle_struct *handle, DIR *dirp, long offset);
 652         long (*telldir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 653         void (*rewind_dir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 654         int (*mkdir_fn)(struct vfs_handle_struct *handle,
 655                         const struct smb_filename *smb_fname,
 656                         mode_t mode);
 657         int (*rmdir_fn)(struct vfs_handle_struct *handle,
 658                         const struct smb_filename *smb_fname);
 659         int (*closedir_fn)(struct vfs_handle_struct *handle, DIR *dir);
 660
 661         /* File operations */
 662
 663         int (*open_fn)(struct vfs_handle_struct *handle,
 664                        struct smb_filename *smb_fname, files_struct *fsp,
 665                        int flags, mode_t mode);
 666         NTSTATUS (*create_file_fn)(struct vfs_handle_struct *handle,
 667                                    struct smb_request *req,
 668                                    uint16_t root_dir_fid,
 669                                    struct smb_filename *smb_fname,
 670                                    uint32_t access_mask,
 671                                    uint32_t share_access,
 672                                    uint32_t create_disposition,
 673                                    uint32_t create_options,
 674                                    uint32_t file_attributes,
 675                                    uint32_t oplock_request,
 676                                    struct smb2_lease *lease,
 677                                    uint64_t allocation_size,
 678                                    uint32_t private_flags,
 679                                    struct security_descriptor *sd,
 680                                    struct ea_list *ea_list,
 681                                    files_struct **result,
 682                                    int *pinfo,
 683                                    const struct smb2_create_blobs *in_context_blobs,
 684                                    struct smb2_create_blobs *out_context_blobs);
 685         int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 686         ssize_t (*read_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n);
 687         ssize_t (*pread_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n, off_t offset);
 688         struct tevent_req *(*pread_send_fn)(struct vfs_handle_struct *handle,
 689                                             TALLOC_CTX *mem_ctx,
 690                                             struct tevent_context *ev,
 691                                             struct files_struct *fsp,
 692                                             void *data,
 693                                             size_t n, off_t offset);
 694         ssize_t (*pread_recv_fn)(struct tevent_req *req, struct vfs_aio_state *state);
 695         ssize_t (*write_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n);
 696         ssize_t (*pwrite_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n, off_t offset);
 697         struct tevent_req *(*pwrite_send_fn)(struct vfs_handle_struct *handle,
 698                                              TALLOC_CTX *mem_ctx,
 699                                              struct tevent_context *ev,
 700                                              struct files_struct *fsp,
 701                                              const void *data,
 702                                              size_t n, off_t offset);
 703         ssize_t (*pwrite_recv_fn)(struct tevent_req *req, struct vfs_aio_state *state);
 704         off_t (*lseek_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset, int whence);
 705         ssize_t (*sendfile_fn)(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *header, off_t offset, size_t count);
 706         ssize_t (*recvfile_fn)(struct vfs_handle_struct *handle, int fromfd, files_struct *tofsp, off_t offset, size_t count);
 707         int (*rename_fn)(struct vfs_handle_struct *handle,
 708                          const struct smb_filename *smb_fname_src,
 709                          const struct smb_filename *smb_fname_dst);
 710         int (*fsync_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 711         struct tevent_req *(*fsync_send_fn)(struct vfs_handle_struct *handle,
 712                                             TALLOC_CTX *mem_ctx,
 713                                             struct tevent_context *ev,
 714                                             struct files_struct *fsp);
 715         int (*fsync_recv_fn)(struct tevent_req *req, struct vfs_aio_state *state);
 716         int (*stat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_fname);
 717         int (*fstat_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
 718         int (*lstat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_filename);
 719         uint64_t (*get_alloc_size_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_STAT *sbuf);
 720         int (*unlink_fn)(struct vfs_handle_struct *handle,
 721                          const struct smb_filename *smb_fname);
 722         int (*chmod_fn)(struct vfs_handle_struct *handle,
 723                         const struct smb_filename *smb_fname,
 724                         mode_t mode);
 725         int (*fchmod_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
 726         int (*chown_fn)(struct vfs_handle_struct *handle,
 727                         const struct smb_filename *smb_fname,
 728                         uid_t uid,
 729                         gid_t gid);
 730         int (*fchown_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, uid_t uid, gid_t gid);
 731         int (*lchown_fn)(struct vfs_handle_struct *handle,
 732                         const struct smb_filename *smb_fname,
 733                         uid_t uid,
 734                         gid_t gid);
 735         int (*chdir_fn)(struct vfs_handle_struct *handle,
 736                          const struct smb_filename *smb_fname);
 737         struct smb_filename *(*getwd_fn)(struct vfs_handle_struct *handle,
 738                                 TALLOC_CTX *mem_ctx);
 739         int (*ntimes_fn)(struct vfs_handle_struct *handle,
 740                          const struct smb_filename *smb_fname,
 741                          struct smb_file_time *ft);
 742         int (*ftruncate_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset);
 743         int (*fallocate_fn)(struct vfs_handle_struct *handle,
 744                             struct files_struct *fsp,
 745                             uint32_t mode,
 746                             off_t offset,
 747                             off_t len);
 748         bool (*lock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, off_t offset, off_t count, int type);
 749         int (*kernel_flock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp,
 750                                uint32_t share_mode, uint32_t access_mask);
 751         int (*linux_setlease_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int leasetype);
 752         bool (*getlock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid);
 753         int (*symlink_fn)(struct vfs_handle_struct *handle,
 754                                 const char *link_contents,
 755                                 const struct smb_filename *new_smb_fname);
 756         int (*readlink_fn)(struct vfs_handle_struct *handle,
 757                                 const struct smb_filename *smb_fname,
 758                                 char *buf,
 759                                 size_t bufsiz);
 760         int (*link_fn)(struct vfs_handle_struct *handle,
 761                                 const struct smb_filename *old_smb_fname,
 762                                 const struct smb_filename *new_smb_fname);
 763         int (*mknod_fn)(struct vfs_handle_struct *handle,
 764                                 const struct smb_filename *smb_fname,
 765                                 mode_t mode,
 766                                 SMB_DEV_T dev);
 767         struct smb_filename *(*realpath_fn)(struct vfs_handle_struct *handle,
 768                                 TALLOC_CTX *ctx,
 769                                 const struct smb_filename *smb_fname);
 770         int (*chflags_fn)(struct vfs_handle_struct *handle,
 771                                 const struct smb_filename *smb_fname,
 772                                 unsigned int flags);
 773         struct file_id (*file_id_create_fn)(struct vfs_handle_struct *handle,
 774                                             const SMB_STRUCT_STAT *sbuf);
 775         struct tevent_req *(*offload_read_send_fn)(TALLOC_CTX *mem_ctx,
 776                                                    struct tevent_context *ev,
 777                                                    struct vfs_handle_struct *handle,
 778                                                    struct files_struct *fsp,
 779                                                    uint32_t fsctl,
 780                                                    uint32_t ttl,
 781                                                    off_t offset,
 782                                                    size_t to_copy);
 783         NTSTATUS (*offload_read_recv_fn)(struct tevent_req *req,
 784                                          struct vfs_handle_struct *handle,
 785                                          TALLOC_CTX *mem_ctx,
 786                                          DATA_BLOB *token_blob);
 787         struct tevent_req *(*offload_write_send_fn)(struct vfs_handle_struct *handle,
 788                                                     TALLOC_CTX *mem_ctx,
 789                                                     struct tevent_context *ev,
 790                                                     uint32_t fsctl,
 791                                                     DATA_BLOB *token,
 792                                                     off_t transfer_offset,
 793                                                     struct files_struct *dest_fsp,
 794                                                     off_t dest_off,
 795                                                     off_t to_copy);
 796         NTSTATUS (*offload_write_recv_fn)(struct vfs_handle_struct *handle,
 797                                           struct tevent_req *req,
 798                                           off_t *copied);
 799         NTSTATUS (*get_compression_fn)(struct vfs_handle_struct *handle,
 800                                        TALLOC_CTX *mem_ctx,
 801                                        struct files_struct *fsp,
 802                                        struct smb_filename *smb_fname,
 803                                        uint16_t *_compression_fmt);
 804         NTSTATUS (*set_compression_fn)(struct vfs_handle_struct *handle,
 805                                        TALLOC_CTX *mem_ctx,
 806                                        struct files_struct *fsp,
 807                                        uint16_t compression_fmt);
 808         NTSTATUS (*snap_check_path_fn)(struct vfs_handle_struct *handle,
 809                                        TALLOC_CTX *mem_ctx,
 810                                        const char *service_path,
 811                                        char **base_volume);
 812         NTSTATUS (*snap_create_fn)(struct vfs_handle_struct *handle,
 813                                    TALLOC_CTX *mem_ctx,
 814                                    const char *base_volume,
 815                                    time_t *tstamp,
 816                                    bool rw,
 817                                    char **base_path,
 818                                    char **snap_path);
 819         NTSTATUS (*snap_delete_fn)(struct vfs_handle_struct *handle,
 820                                    TALLOC_CTX *mem_ctx,
 821                                    char *base_path,
 822                                    char *snap_path);
 823
 824         NTSTATUS (*streaminfo_fn)(struct vfs_handle_struct *handle,
 825                                   struct files_struct *fsp,
 826                                   const struct smb_filename *smb_fname,
 827                                   TALLOC_CTX *mem_ctx,
 828                                   unsigned int *num_streams,
 829                                   struct stream_struct **streams);
 830
 831         int (*get_real_filename_fn)(struct vfs_handle_struct *handle,
 832                                     const char *path,
 833                                     const char *name,
 834                                     TALLOC_CTX *mem_ctx,
 835                                     char **found_name);
 836
 837         const char *(*connectpath_fn)(struct vfs_handle_struct *handle,
 838                                       const struct smb_filename *smb_fname);
 839
 840         NTSTATUS (*brl_lock_windows_fn)(struct vfs_handle_struct *handle,
 841                                         struct byte_range_lock *br_lck,
 842                                         struct lock_struct *plock,
 843                                         bool blocking_lock);
 844
 845         bool (*brl_unlock_windows_fn)(struct vfs_handle_struct *handle,
 846                                       struct messaging_context *msg_ctx,
 847                                       struct byte_range_lock *br_lck,
 848                                       const struct lock_struct *plock);
 849
 850         bool (*brl_cancel_windows_fn)(struct vfs_handle_struct *handle,
 851                                       struct byte_range_lock *br_lck,
 852                                       struct lock_struct *plock);
 853
 854         bool (*strict_lock_check_fn)(struct vfs_handle_struct *handle,
 855                                      struct files_struct *fsp,
 856                                      struct lock_struct *plock);
 857
 858         NTSTATUS (*translate_name_fn)(struct vfs_handle_struct *handle,
 859                                       const char *name,
 860                                       enum vfs_translate_direction direction,
 861                                       TALLOC_CTX *mem_ctx,
 862                                       char **mapped_name);
 863
 864         NTSTATUS (*fsctl_fn)(struct vfs_handle_struct *handle,
 865                              struct files_struct *fsp,
 866                              TALLOC_CTX *ctx,
 867                              uint32_t function,
 868                              uint16_t req_flags,
 869                              const uint8_t *_in_data,
 870                              uint32_t in_len,
 871                              uint8_t **_out_data,
 872                              uint32_t max_out_len,
 873                              uint32_t *out_len);
 874
 875         NTSTATUS (*get_dos_attributes_fn)(struct vfs_handle_struct *handle,
 876                                           struct smb_filename *smb_fname,
 877                                           uint32_t *dosmode);
 878
 879         NTSTATUS (*fget_dos_attributes_fn)(struct vfs_handle_struct *handle,
 880                                            struct files_struct *fsp,
 881                                            uint32_t *dosmode);
 882
 883         NTSTATUS (*set_dos_attributes_fn)(struct vfs_handle_struct *handle,
 884                                           const struct smb_filename *smb_fname,
 885                                           uint32_t dosmode);
 886
 887         NTSTATUS (*fset_dos_attributes_fn)(struct vfs_handle_struct *hande,
 888                                            struct files_struct *fsp,
 889                                            uint32_t dosmode);
 890
 891         /* NT ACL operations. */
 892
 893         NTSTATUS (*fget_nt_acl_fn)(struct vfs_handle_struct *handle,
 894                                    struct files_struct *fsp,
 895                                    uint32_t security_info,
 896                                    TALLOC_CTX *mem_ctx,
 897                                    struct security_descriptor **ppdesc);
 898         NTSTATUS (*get_nt_acl_fn)(struct vfs_handle_struct *handle,
 899                                   const struct smb_filename *smb_fname,
 900                                   uint32_t security_info,
 901                                    TALLOC_CTX *mem_ctx,
 902                                   struct security_descriptor **ppdesc);
 903         NTSTATUS (*fset_nt_acl_fn)(struct vfs_handle_struct *handle,
 904                                    struct files_struct *fsp,
 905                                    uint32_t security_info_sent,
 906                                    const struct security_descriptor *psd);
 907
 908         NTSTATUS (*audit_file_fn)(struct vfs_handle_struct *handle,
 909                                   struct smb_filename *file,
 910                                   struct security_acl *sacl,
 911                                   uint32_t access_requested,
 912                                   uint32_t access_denied);
 913
 914         /* POSIX ACL operations. */
 915
 916         int (*chmod_acl_fn)(struct vfs_handle_struct *handle,
 917                                         const struct smb_filename *smb_fname,
 918                                         mode_t mode);
 919         int (*fchmod_acl_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
 920
 921         SMB_ACL_T (*sys_acl_get_file_fn)(struct vfs_handle_struct *handle,
 922                                          const struct smb_filename *smb_fname,
 923                                          SMB_ACL_TYPE_T type,
 924                                          TALLOC_CTX *mem_ctx);
 925         SMB_ACL_T (*sys_acl_get_fd_fn)(struct vfs_handle_struct *handle,
 926                                        struct files_struct *fsp,
 927                                        TALLOC_CTX *mem_ctx);
 928         int (*sys_acl_blob_get_file_fn)(struct vfs_handle_struct *handle,
 929                                         const struct smb_filename *smb_fname,
 930                                         TALLOC_CTX *mem_ctx,
 931                                         char **blob_description,
 932                                         DATA_BLOB *blob);
 933         int (*sys_acl_blob_get_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp,
 934                                       TALLOC_CTX *mem_ctx, char **blob_description,
 935                                       DATA_BLOB *blob);
 936         int (*sys_acl_set_file_fn)(struct vfs_handle_struct *handle,
 937                                         const struct smb_filename *smb_fname,
 938                                         SMB_ACL_TYPE_T acltype,
 939                                         SMB_ACL_T theacl);
 940         int (*sys_acl_set_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_ACL_T theacl);
 941         int (*sys_acl_delete_def_file_fn)(struct vfs_handle_struct *handle,
 942                                         const struct smb_filename *smb_fname);
 943
 944         /* EA operations. */
 945         ssize_t (*getxattr_fn)(struct vfs_handle_struct *handle,
 946                                         const struct smb_filename *smb_fname,
 947                                         const char *name,
 948                                         void *value,
 949                                         size_t size);
 950         ssize_t (*fgetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size);
 951         ssize_t (*listxattr_fn)(struct vfs_handle_struct *handle,
 952                                         const struct smb_filename *smb_fname,
 953                                         char *list,
 954                                         size_t size);
 955         ssize_t (*flistxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size);
 956         int (*removexattr_fn)(struct vfs_handle_struct *handle,
 957                                         const struct smb_filename *smb_fname,
 958                                         const char *name);
 959         int (*fremovexattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name);
 960         int (*setxattr_fn)(struct vfs_handle_struct *handle,
 961                                         const struct smb_filename *smb_fname,
 962                                         const char *name,
 963                                         const void *value,
 964                                         size_t size,
 965                                         int flags);
 966         int (*fsetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags);
 967
 968         /* aio operations */
 969         bool (*aio_force_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 970
 971         /* durable handle operations */
 972         NTSTATUS (*durable_cookie_fn)(struct vfs_handle_struct *handle,
 973                                       struct files_struct *fsp,
 974                                       TALLOC_CTX *mem_ctx,
 975                                       DATA_BLOB *cookie);
 976         NTSTATUS (*durable_disconnect_fn)(struct vfs_handle_struct *handle,
 977                                           struct files_struct *fsp,
 978                                           const DATA_BLOB old_cookie,
 979                                           TALLOC_CTX *mem_ctx,
 980                                           DATA_BLOB *new_cookie);
 981         NTSTATUS (*durable_reconnect_fn)(struct vfs_handle_struct *handle,
 982                                          struct smb_request *smb1req,
 983                                          struct smbXsrv_open *op,
 984                                          const DATA_BLOB old_cookie,
 985                                          TALLOC_CTX *mem_ctx,
 986                                          struct files_struct **fsp,
 987                                          DATA_BLOB *new_cookie);
 988
 989         NTSTATUS (*readdir_attr_fn)(struct vfs_handle_struct *handle,
 990                                     const struct smb_filename *fname,
 991                                     TALLOC_CTX *mem_ctx,
 992                                     struct readdir_attr_data **attr_data);
 993 };
 994
 995 /*
 996     VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
 997     which describes all operations this module is willing to intercept.
 998     VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
 999     using this information.
1000 */
1001
1002 typedef struct vfs_handle_struct {
1003         struct vfs_handle_struct  *next, *prev;
1004         const char *param;
1005         struct connection_struct *conn;
1006         const struct vfs_fn_pointers *fns;
1007         void *data;
1008         void (*free_data)(void **data);
1009 } vfs_handle_struct;
1010
1011
1012 typedef struct vfs_statvfs_struct {
1013         /* For undefined recommended transfer size return -1 in that field */
1014         uint32_t OptimalTransferSize;  /* bsize on some os, iosize on other os */
1015         uint32_t BlockSize;
1016
1017         /*
1018          The next three fields are in terms of the block size.
1019          (above). If block size is unknown, 4096 would be a
1020          reasonable block size for a server to report.
1021          Note that returning the blocks/blocksavail removes need
1022          to make a second call (to QFSInfo level 0x103 to get this info.
1023          UserBlockAvail is typically less than or equal to BlocksAvail,
1024          if no distinction is made return the same value in each.
1025         */
1026
1027         uint64_t TotalBlocks;
1028         uint64_t BlocksAvail;       /* bfree */
1029         uint64_t UserBlocksAvail;   /* bavail */
1030
1031         /* For undefined Node fields or FSID return -1 */
1032         uint64_t TotalFileNodes;
1033         uint64_t FreeFileNodes;
1034         uint64_t FsIdentifier;   /* fsid */
1035         /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
1036         /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call   */
1037
1038         int FsCapabilities;
1039 } vfs_statvfs_struct;
1040
1041 /* Add a new FSP extension of the given type. Returns a pointer to the
1042  * extenstion data.
1043  */
1044 #define VFS_ADD_FSP_EXTENSION(handle, fsp, type, destroy_fn)            \
1045     (type *)vfs_add_fsp_extension_notype(handle, (fsp), sizeof(type), (destroy_fn))
1046
1047 /* Return a pointer to the existing FSP extension data. */
1048 #define VFS_FETCH_FSP_EXTENSION(handle, fsp) \
1049     vfs_fetch_fsp_extension(handle, (fsp))
1050
1051 /* Return the talloc context associated with an FSP extension. */
1052 #define VFS_MEMCTX_FSP_EXTENSION(handle, fsp) \
1053     vfs_memctx_fsp_extension(handle, (fsp))
1054
1055 /* Remove and destroy an FSP extension. */
1056 #define VFS_REMOVE_FSP_EXTENSION(handle, fsp) \
1057     vfs_remove_fsp_extension((handle), (fsp))
1058
1059 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
1060         if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
1061                 DEBUG(0,("%s() failed to get vfs_handle->data!\n",__FUNCTION__)); \
1062                 ret; \
1063         } \
1064 }
1065
1066 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
1067         if (!(handle)) { \
1068                 DEBUG(0,("%s() failed to set handle->data!\n",__FUNCTION__)); \
1069                 ret; \
1070         } else { \
1071                 if ((handle)->free_data) { \
1072                         (handle)->free_data(&(handle)->data); \
1073                 } \
1074                 (handle)->data = (void *)datap; \
1075                 (handle)->free_data = free_fn; \
1076         } \
1077 }
1078
1079 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
1080         if ((handle) && (handle)->free_data) { \
1081                 (handle)->free_data(&(handle)->data); \
1082         } \
1083 }
1084
1085 /* Check whether module-specific data handle was already allocated or not */
1086 #define SMB_VFS_HANDLE_TEST_DATA(handle)  ( !(handle) || !(handle)->data ? False : True )
1087
1088 #define SMB_VFS_OP(x) ((void *) x)
1089
1090 #define DEFAULT_VFS_MODULE_NAME "/[Default VFS]/"
1091
1092 #include "vfs_macros.h"
1093
1094 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
1095                          const char *service, const char *user);
1096 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle);
1097 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
1098                                 const struct smb_filename *smb_filename,
1099                                 uint64_t *bsize,
1100                                 uint64_t *dfree,
1101                                 uint64_t *dsize);
1102 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
1103                                 const struct smb_filename *smb_filename,
1104                                 enum SMB_QUOTA_TYPE qtype,
1105                                 unid_t id,
1106                                 SMB_DISK_QUOTA *qt);
1107 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
1108                            enum SMB_QUOTA_TYPE qtype, unid_t id,
1109                            SMB_DISK_QUOTA *qt);
1110 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
1111                                       struct files_struct *fsp,
1112                                       struct shadow_copy_data *shadow_copy_data,
1113                                       bool labels);
1114 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle,
1115                         const struct smb_filename *smb_fname,
1116                         struct vfs_statvfs_struct *statbuf);
1117 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
1118                                       enum timestamp_set_resolution *p_ts_res);
1119 /*
1120  * Note: that "struct dfs_GetDFSReferral *r" needs to be a valid TALLOC_CTX
1121  */
1122 NTSTATUS smb_vfs_call_get_dfs_referrals(struct vfs_handle_struct *handle,
1123                                         struct dfs_GetDFSReferral *r);
1124 DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
1125                         const struct smb_filename *smb_fname,
1126                         const char *mask,
1127                         uint32_t attributes);
1128 DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
1129                                         struct files_struct *fsp,
1130                                         const char *mask,
1131                                         uint32_t attributes);
1132 struct dirent *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1133                                         DIR *dirp,
1134                                         SMB_STRUCT_STAT *sbuf);
1135 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
1136                           DIR *dirp, long offset);
1137 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
1138                           DIR *dirp);
1139 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1140                              DIR *dirp);
1141 int smb_vfs_call_mkdir(struct vfs_handle_struct *handle,
1142                         const struct smb_filename *smb_fname,
1143                         mode_t mode);
1144 int smb_vfs_call_rmdir(struct vfs_handle_struct *handle,
1145                         const struct smb_filename *smb_fname);
1146 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1147                           DIR *dir);
1148 int smb_vfs_call_open(struct vfs_handle_struct *handle,
1149                       struct smb_filename *smb_fname, struct files_struct *fsp,
1150                       int flags, mode_t mode);
1151 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1152                                   struct smb_request *req,
1153                                   uint16_t root_dir_fid,
1154                                   struct smb_filename *smb_fname,
1155                                   uint32_t access_mask,
1156                                   uint32_t share_access,
1157                                   uint32_t create_disposition,
1158                                   uint32_t create_options,
1159                                   uint32_t file_attributes,
1160                                   uint32_t oplock_request,
1161                                   struct smb2_lease *lease,
1162                                   uint64_t allocation_size,
1163                                   uint32_t private_flags,
1164                                   struct security_descriptor *sd,
1165                                   struct ea_list *ea_list,
1166                                   files_struct **result,
1167                                   int *pinfo,
1168                                   const struct smb2_create_blobs *in_context_blobs,
1169                                   struct smb2_create_blobs *out_context_blobs);
1170 int smb_vfs_call_close(struct vfs_handle_struct *handle,
1171                        struct files_struct *fsp);
1172 ssize_t smb_vfs_call_read(struct vfs_handle_struct *handle,
1173                           struct files_struct *fsp, void *data, size_t n);
1174 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1175                            struct files_struct *fsp, void *data, size_t n,
1176                            off_t offset);
1177 struct tevent_req *smb_vfs_call_pread_send(struct vfs_handle_struct *handle,
1178                                            TALLOC_CTX *mem_ctx,
1179                                            struct tevent_context *ev,
1180                                            struct files_struct *fsp,
1181                                            void *data,
1182                                            size_t n, off_t offset);
1183 ssize_t SMB_VFS_PREAD_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1184
1185 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
1186                            struct files_struct *fsp, const void *data,
1187                            size_t n);
1188 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1189                             struct files_struct *fsp, const void *data,
1190                             size_t n, off_t offset);
1191 struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
1192                                             TALLOC_CTX *mem_ctx,
1193                                             struct tevent_context *ev,
1194                                             struct files_struct *fsp,
1195                                             const void *data,
1196                                             size_t n, off_t offset);
1197 ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1198
1199 off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1200                              struct files_struct *fsp, off_t offset,
1201                              int whence);
1202 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1203                               files_struct *fromfsp, const DATA_BLOB *header,
1204                               off_t offset, size_t count);
1205 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1206                               files_struct *tofsp, off_t offset,
1207                               size_t count);
1208 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
1209                         const struct smb_filename *smb_fname_src,
1210                         const struct smb_filename *smb_fname_dst);
1211 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
1212                        struct files_struct *fsp);
1213
1214 struct tevent_req *smb_vfs_call_fsync_send(struct vfs_handle_struct *handle,
1215                                            TALLOC_CTX *mem_ctx,
1216                                            struct tevent_context *ev,
1217                                            struct files_struct *fsp);
1218 int SMB_VFS_FSYNC_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1219
1220 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1221                       struct smb_filename *smb_fname);
1222 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1223                        struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
1224 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1225                        struct smb_filename *smb_filename);
1226 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1227                                      struct files_struct *fsp,
1228                                      const SMB_STRUCT_STAT *sbuf);
1229 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
1230                         const struct smb_filename *smb_fname);
1231 int smb_vfs_call_chmod(struct vfs_handle_struct *handle,
1232                         const struct smb_filename *smb_fname,
1233                         mode_t mode);
1234 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1235                         struct files_struct *fsp, mode_t mode);
1236 int smb_vfs_call_chown(struct vfs_handle_struct *handle,
1237                         const struct smb_filename *smb_fname,
1238                         uid_t uid,
1239                         gid_t gid);
1240 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1241                         struct files_struct *fsp, uid_t uid, gid_t gid);
1242 int smb_vfs_call_lchown(struct vfs_handle_struct *handle,
1243                         const struct smb_filename *smb_fname,
1244                         uid_t uid,
1245                         gid_t gid);
1246 int smb_vfs_call_chdir(struct vfs_handle_struct *handle,
1247                         const struct smb_filename *smb_fname);
1248 struct smb_filename *smb_vfs_call_getwd(struct vfs_handle_struct *handle,
1249                                 TALLOC_CTX *ctx);
1250 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
1251                         const struct smb_filename *smb_fname,
1252                         struct smb_file_time *ft);
1253 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
1254                            struct files_struct *fsp, off_t offset);
1255 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
1256                            struct files_struct *fsp,
1257                            uint32_t mode,
1258                            off_t offset,
1259                            off_t len);
1260 bool smb_vfs_call_lock(struct vfs_handle_struct *handle,
1261                        struct files_struct *fsp, int op, off_t offset,
1262                        off_t count, int type);
1263 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
1264                               struct files_struct *fsp, uint32_t share_mode,
1265                               uint32_t access_mask);
1266 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
1267                                 struct files_struct *fsp, int leasetype);
1268 bool smb_vfs_call_getlock(struct vfs_handle_struct *handle,
1269                           struct files_struct *fsp, off_t *poffset,
1270                           off_t *pcount, int *ptype, pid_t *ppid);
1271 int smb_vfs_call_symlink(struct vfs_handle_struct *handle,
1272                         const char *link_contents,
1273                         const struct smb_filename *new_smb_fname);
1274 int smb_vfs_call_readlink(struct vfs_handle_struct *handle,
1275                         const struct smb_filename *smb_fname,
1276                         char *buf,
1277                         size_t bufsiz);
1278 int smb_vfs_call_link(struct vfs_handle_struct *handle,
1279                         const struct smb_filename *old_smb_fname,
1280                         const struct smb_filename *new_smb_fname);
1281 int smb_vfs_call_mknod(struct vfs_handle_struct *handle,
1282                         const struct smb_filename *smb_fname,
1283                         mode_t mode,
1284                         SMB_DEV_T dev);
1285 struct smb_filename *smb_vfs_call_realpath(struct vfs_handle_struct *handle,
1286                         TALLOC_CTX *ctx,
1287                         const struct smb_filename *smb_fname);
1288 int smb_vfs_call_chflags(struct vfs_handle_struct *handle,
1289                         const struct smb_filename *smb_fname,
1290                         unsigned int flags);
1291 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
1292                                            const SMB_STRUCT_STAT *sbuf);
1293 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
1294                                  struct files_struct *fsp,
1295                                  const struct smb_filename *smb_fname,
1296                                  TALLOC_CTX *mem_ctx,
1297                                  unsigned int *num_streams,
1298                                  struct stream_struct **streams);
1299 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
1300                                    const char *path, const char *name,
1301                                    TALLOC_CTX *mem_ctx, char **found_name);
1302 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
1303                                      const struct smb_filename *smb_fname);
1304 NTSTATUS smb_vfs_call_brl_lock_windows(struct vfs_handle_struct *handle,
1305                                        struct byte_range_lock *br_lck,
1306                                        struct lock_struct *plock,
1307                                        bool blocking_lock);
1308 bool smb_vfs_call_brl_unlock_windows(struct vfs_handle_struct *handle,
1309                                      struct messaging_context *msg_ctx,
1310                                      struct byte_range_lock *br_lck,
1311                                      const struct lock_struct *plock);
1312 bool smb_vfs_call_brl_cancel_windows(struct vfs_handle_struct *handle,
1313                                      struct byte_range_lock *br_lck,
1314                                      struct lock_struct *plock);
1315 bool smb_vfs_call_strict_lock_check(struct vfs_handle_struct *handle,
1316                                     struct files_struct *fsp,
1317                                     struct lock_struct *plock);
1318 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
1319                                      const char *name,
1320                                      enum vfs_translate_direction direction,
1321                                      TALLOC_CTX *mem_ctx,
1322                                      char **mapped_name);
1323 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
1324                             struct files_struct *fsp,
1325                             TALLOC_CTX *ctx,
1326                             uint32_t function,
1327                             uint16_t req_flags,
1328                             const uint8_t *_in_data,
1329                             uint32_t in_len,
1330                             uint8_t **_out_data,
1331                             uint32_t max_out_len,
1332                             uint32_t *out_len);
1333 NTSTATUS smb_vfs_call_get_dos_attributes(struct vfs_handle_struct *handle,
1334                                          struct smb_filename *smb_fname,
1335                                          uint32_t *dosmode);
1336 NTSTATUS smb_vfs_call_fget_dos_attributes(struct vfs_handle_struct *handle,
1337                                           struct files_struct *fsp,
1338                                           uint32_t *dosmode);
1339 NTSTATUS smb_vfs_call_set_dos_attributes(struct vfs_handle_struct *handle,
1340                                          const struct smb_filename *smb_fname,
1341                                          uint32_t dosmode);
1342 NTSTATUS smb_vfs_call_fset_dos_attributes(struct vfs_handle_struct *handle,
1343                                           struct files_struct *fsp,
1344                                           uint32_t dosmode);
1345 struct tevent_req *smb_vfs_call_offload_read_send(
1346         TALLOC_CTX *mem_ctx,
1347         struct tevent_context *ev,
1348         struct vfs_handle_struct *handle,
1349         struct files_struct *fsp,
1350         uint32_t fsctl,
1351         uint32_t ttl,
1352         off_t offset,
1353         size_t to_copy);
1354 NTSTATUS smb_vfs_call_offload_read_recv(struct tevent_req *req,
1355                                         struct vfs_handle_struct *handle,
1356                                         TALLOC_CTX *mem_ctx,
1357                                         DATA_BLOB *token_blob);
1358 struct tevent_req *smb_vfs_call_offload_write_send(struct vfs_handle_struct *handle,
1359                                                    TALLOC_CTX *mem_ctx,
1360                                                    struct tevent_context *ev,
1361                                                    uint32_t fsctl,
1362                                                    DATA_BLOB *token,
1363                                                    off_t transfer_offset,
1364                                                    struct files_struct *dest_fsp,
1365                                                    off_t dest_off,
1366                                                    off_t num);
1367 NTSTATUS smb_vfs_call_offload_write_recv(struct vfs_handle_struct *handle,
1368                                          struct tevent_req *req,
1369                                          off_t *copied);
1370 NTSTATUS smb_vfs_call_get_compression(struct vfs_handle_struct *handle,
1371                                       TALLOC_CTX *mem_ctx,
1372                                       struct files_struct *fsp,
1373                                       struct smb_filename *smb_fname,
1374                                       uint16_t *_compression_fmt);
1375 NTSTATUS smb_vfs_call_set_compression(struct vfs_handle_struct *handle,
1376                                       TALLOC_CTX *mem_ctx,
1377                                       struct files_struct *fsp,
1378                                       uint16_t compression_fmt);
1379 NTSTATUS smb_vfs_call_snap_check_path(vfs_handle_struct *handle,
1380                                       TALLOC_CTX *mem_ctx,
1381                                       const char *service_path,
1382                                       char **base_volume);
1383 NTSTATUS smb_vfs_call_snap_create(struct vfs_handle_struct *handle,
1384                                   TALLOC_CTX *mem_ctx,
1385                                   const char *base_volume,
1386                                   time_t *tstamp,
1387                                   bool rw,
1388                                   char **base_path,
1389                                   char **snap_path);
1390 NTSTATUS smb_vfs_call_snap_delete(struct vfs_handle_struct *handle,
1391                                   TALLOC_CTX *mem_ctx,
1392                                   char *base_path,
1393                                   char *snap_path);
1394 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
1395                                   struct files_struct *fsp,
1396                                   uint32_t security_info,
1397                                   TALLOC_CTX *mem_ctx,
1398                                   struct security_descriptor **ppdesc);
1399 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
1400                                  const struct smb_filename *smb_fname,
1401                                  uint32_t security_info,
1402                                  TALLOC_CTX *mem_ctx,
1403                                  struct security_descriptor **ppdesc);
1404 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
1405                                   struct files_struct *fsp,
1406                                   uint32_t security_info_sent,
1407                                   const struct security_descriptor *psd);
1408 NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
1409                                  struct smb_filename *file,
1410                                  struct security_acl *sacl,
1411                                  uint32_t access_requested,
1412                                  uint32_t access_denied);
1413 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle,
1414                                 const struct smb_filename *file,
1415                                 mode_t mode);
1416 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
1417                             struct files_struct *fsp, mode_t mode);
1418 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
1419                                         const struct smb_filename *smb_fname,
1420                                         SMB_ACL_TYPE_T type,
1421                                         TALLOC_CTX *mem_ctx);
1422 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
1423                                       struct files_struct *fsp,
1424                                       TALLOC_CTX *mem_ctx);
1425 int smb_vfs_call_sys_acl_blob_get_file(struct vfs_handle_struct *handle,
1426                                        const struct smb_filename *smb_fname,
1427                                        TALLOC_CTX *mem_ctx,
1428                                        char **blob_description,
1429                                        DATA_BLOB *blob);
1430 int smb_vfs_call_sys_acl_blob_get_fd(struct vfs_handle_struct *handle,
1431                                      struct files_struct *fsp,
1432                                      TALLOC_CTX *mem_ctx,
1433                                      char **blob_description,
1434                                      DATA_BLOB *blob);
1435 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
1436                                 const struct smb_filename *smb_fname,
1437                                 SMB_ACL_TYPE_T acltype,
1438                                 SMB_ACL_T theacl);
1439 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
1440                                 struct files_struct *fsp, SMB_ACL_T theacl);
1441 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1442                                 const struct smb_filename *smb_fname);
1443 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
1444                                 const struct smb_filename *smb_fname,
1445                                 const char *name,
1446                                 void *value,
1447                                 size_t size);
1448 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
1449                                struct files_struct *fsp, const char *name,
1450                                void *value, size_t size);
1451 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
1452                                 const struct smb_filename *smb_fname,
1453                                 char *list,
1454                                 size_t size);
1455 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
1456                                 struct files_struct *fsp, char *list,
1457                                 size_t size);
1458 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
1459                                 const struct smb_filename *smb_fname,
1460                                 const char *name);
1461 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
1462                               struct files_struct *fsp, const char *name);
1463 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle,
1464                                 const struct smb_filename *smb_fname,
1465                                 const char *name,
1466                                 const void *value,
1467                                 size_t size,
1468                                 int flags);
1469 int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
1470                            const char *name, const void *value, size_t size,
1471                            int flags);
1472 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
1473                            struct files_struct *fsp, const char *name,
1474                            const void *value, size_t size, int flags);
1475 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
1476                             struct files_struct *fsp);
1477 NTSTATUS smb_vfs_call_durable_cookie(struct vfs_handle_struct *handle,
1478                                      struct files_struct *fsp,
1479                                      TALLOC_CTX *mem_ctx,
1480                                      DATA_BLOB *cookie);
1481 NTSTATUS smb_vfs_call_durable_disconnect(struct vfs_handle_struct *handle,
1482                                          struct files_struct *fsp,
1483                                          const DATA_BLOB old_cookie,
1484                                          TALLOC_CTX *mem_ctx,
1485                                          DATA_BLOB *new_cookie);
1486 NTSTATUS smb_vfs_call_durable_reconnect(struct vfs_handle_struct *handle,
1487                                         struct smb_request *smb1req,
1488                                         struct smbXsrv_open *op,
1489                                         const DATA_BLOB old_cookie,
1490                                         TALLOC_CTX *mem_ctx,
1491                                         struct files_struct **fsp,
1492                                         DATA_BLOB *new_cookie);
1493 NTSTATUS smb_vfs_call_readdir_attr(struct vfs_handle_struct *handle,
1494                                    const struct smb_filename *fname,
1495                                    TALLOC_CTX *mem_ctx,
1496                                    struct readdir_attr_data **attr_data);
1497
1498 NTSTATUS smb_register_vfs(int version, const char *name,
1499                           const struct vfs_fn_pointers *fns);
1500 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
1501                                    files_struct *fsp, size_t ext_size,
1502                                    void (*destroy_fn)(void *p_data));
1503 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1504 void vfs_remove_all_fsp_extensions(struct files_struct *fsp);
1505 void *vfs_memctx_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1506 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1507
1508 void smb_vfs_assert_all_fns(const struct vfs_fn_pointers* fns,
1509                             const char *module);
1510
1511 #endif /* _VFS_H */