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
 248 #define SMB_VFS_INTERFACE_VERSION 37
 249
 250 /*
 251     All intercepted VFS operations must be declared as static functions inside module source
 252     in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
 253     example VFS modules for more details.
 254 */
 255
 256 /* VFS operations structure */
 257
 258 struct vfs_handle_struct;
 259 struct connection_struct;
 260 struct files_struct;
 261 struct security_descriptor;
 262 struct vfs_statvfs_struct;
 263 struct smb_request;
 264 struct ea_list;
 265 struct smb_file_time;
 266 struct blocking_lock_record;
 267 struct smb_filename;
 268 struct dfs_GetDFSReferral;
 269
 270 typedef union unid_t {
 271         uid_t uid;
 272         gid_t gid;
 273 } unid_t;
 274
 275 struct fd_handle {
 276         size_t ref_count;
 277         int fd;
 278         uint64_t position_information;
 279         off_t pos;
 280         uint32_t private_options;       /* NT Create options, but we only look at
 281                                  * NTCREATEX_OPTIONS_PRIVATE_DENY_DOS and
 282                                  * NTCREATEX_OPTIONS_PRIVATE_DENY_FCB and
 283                                  * NTCREATEX_OPTIONS_PRIVATE_DELETE_ON_CLOSE
 284                                  * for print files *only*, where
 285                                  * DELETE_ON_CLOSE is not stored in the share
 286                                  * mode database.
 287                                  */
 288         unsigned long gen_id;
 289 };
 290
 291 struct fsp_lease {
 292         size_t ref_count;
 293         struct smbd_server_connection *sconn;
 294         struct tevent_timer *timeout;
 295         struct smb2_lease lease;
 296 };
 297
 298 typedef struct files_struct {
 299         struct files_struct *next, *prev;
 300         uint64_t fnum;
 301         struct smbXsrv_open *op;
 302         struct connection_struct *conn;
 303         struct fd_handle *fh;
 304         unsigned int num_smb_operations;
 305         struct file_id file_id;
 306         uint64_t initial_allocation_size; /* Faked up initial allocation on disk. */
 307         uint16_t file_pid;
 308         uint64_t vuid; /* SMB2 compat */
 309         struct write_cache *wcp;
 310         struct timeval open_time;
 311         uint32_t access_mask;           /* NTCreateX access bits (FILE_READ_DATA etc.) */
 312         uint32_t share_access;          /* NTCreateX share constants (FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE). */
 313
 314         bool kernel_share_modes_taken;
 315
 316         bool update_write_time_triggered;
 317         struct tevent_timer *update_write_time_event;
 318         bool update_write_time_on_close;
 319         struct timespec close_write_time;
 320         bool write_time_forced;
 321
 322         int oplock_type;
 323         struct fsp_lease *lease;
 324         int sent_oplock_break;
 325         struct tevent_timer *oplock_timeout;
 326         struct lock_struct last_lock_failure;
 327         int current_lock_count; /* Count the number of outstanding locks and pending locks. */
 328
 329         bool can_lock;
 330         bool can_read;
 331         bool can_write;
 332         bool modified;
 333         bool is_directory;
 334         bool aio_write_behind;
 335         bool initial_delete_on_close; /* Only set at NTCreateX if file was created. */
 336         bool delete_on_close;
 337         uint64_t posix_flags;
 338         bool is_sparse;
 339         bool backup_intent; /* Handle was successfully opened with backup intent
 340                                 and opener has privilege to do so. */
 341         bool use_ofd_locks; /* Are we using open file description locks ? */
 342         struct smb_filename *fsp_name;
 343         uint32_t name_hash;             /* Jenkins hash of full pathname. */
 344         uint64_t mid;                   /* Mid of the operation that created us. */
 345
 346         struct vfs_fsp_data *vfs_extension;
 347         struct fake_file_handle *fake_file_handle;
 348
 349         struct notify_change_buf *notify;
 350
 351         struct files_struct *base_fsp; /* placeholder for delete on close */
 352
 353         /*
 354          * Read-only cached brlock record, thrown away when the
 355          * brlock.tdb seqnum changes. This avoids fetching data from
 356          * the brlock.tdb on every read/write call.
 357          */
 358         int brlock_seqnum;
 359         struct byte_range_lock *brlock_rec;
 360
 361         struct dptr_struct *dptr;
 362
 363         /* if not NULL, means this is a print file */
 364         struct print_file_data *print_file;
 365
 366         unsigned num_aio_requests;
 367         struct tevent_req **aio_requests;
 368
 369         /*
 370          * If a close request comes in while we still have aio_requests
 371          * around, we need to hold back the close. When all aio_requests are
 372          * done, the aio completion routines need tevent_wait_done() on
 373          * this. A bit ugly, but before we have close_file() fully async
 374          * possibly the simplest approach. Thanks, Jeremy for the idea.
 375          */
 376         struct tevent_req *deferred_close;
 377 } files_struct;
 378
 379 #define FSP_POSIX_FLAGS_OPEN            0x01
 380 #define FSP_POSIX_FLAGS_RENAME          0x02
 381 #define FSP_POSIX_FLAGS_PATHNAMES       0x04
 382
 383 #define FSP_POSIX_FLAGS_ALL                     \
 384         (FSP_POSIX_FLAGS_OPEN |                 \
 385          FSP_POSIX_FLAGS_PATHNAMES |            \
 386          FSP_POSIX_FLAGS_RENAME)
 387
 388 struct vuid_cache_entry {
 389         struct auth_session_info *session_info;
 390         uint64_t vuid; /* SMB2 compat */
 391         bool read_only;
 392         uint32_t share_access;
 393 };
 394
 395 struct vuid_cache {
 396         unsigned int next_entry;
 397         struct vuid_cache_entry array[VUID_CACHE_SIZE];
 398 };
 399
 400 typedef struct {
 401         char *name;
 402         bool is_wild;
 403 } name_compare_entry;
 404
 405 struct dfree_cached_info {
 406         time_t last_dfree_time;
 407         uint64_t dfree_ret;
 408         uint64_t bsize;
 409         uint64_t dfree;
 410         uint64_t dsize;
 411 };
 412
 413 struct share_params {
 414         int service;
 415 };
 416
 417 typedef struct connection_struct {
 418         struct connection_struct *next, *prev;
 419         struct smbd_server_connection *sconn; /* can be NULL */
 420         struct smbXsrv_tcon *tcon; /* can be NULL */
 421         uint32_t cnum; /* an index passed over the wire */
 422         struct share_params *params;
 423         bool force_user;
 424         struct vuid_cache *vuid_cache;
 425         bool printer;
 426         bool ipc;
 427         bool read_only; /* Attributes for the current user of the share. */
 428         uint32_t share_access;
 429         /* Does this filesystem honor
 430            sub second timestamps on files
 431            and directories when setting time ? */
 432         enum timestamp_set_resolution ts_res;
 433         char *connectpath;
 434         char *origpath;
 435         struct smb_filename *cwd_fname; /* Working directory. */
 436
 437         struct vfs_handle_struct *vfs_handles;          /* for the new plugins */
 438
 439         /*
 440          * This represents the user information on this connection. Depending
 441          * on the vuid using this tid, this might change per SMB request.
 442          */
 443         struct auth_session_info *session_info;
 444
 445         /*
 446          * If the "force group" parameter is set, this is the primary gid that
 447          * may be used in the users token, depending on the vuid using this tid.
 448          */
 449         gid_t force_group_gid;
 450
 451         uint64_t vuid; /* vuid of user who *opened* this connection, or UID_FIELD_INVALID */
 452
 453         time_t lastused;
 454         time_t lastused_count;
 455         int num_files_open;
 456         unsigned int num_smb_operations; /* Count of smb operations on this tree. */
 457         int encrypt_level;
 458         bool encrypted_tid;
 459
 460         /* Semantics requested by the client or forced by the server config. */
 461         bool case_sensitive;
 462         bool case_preserve;
 463         bool short_case_preserve;
 464
 465         /* Semantics provided by the underlying filesystem. */
 466         int fs_capabilities;
 467         /* Device number of the directory of the share mount.
 468            Used to ensure unique FileIndex returns. */
 469         SMB_DEV_T base_share_dev;
 470
 471         name_compare_entry *hide_list; /* Per-share list of files to return as hidden. */
 472         name_compare_entry *veto_list; /* Per-share list of files to veto (never show). */
 473         name_compare_entry *veto_oplock_list; /* Per-share list of files to refuse oplocks on. */
 474         name_compare_entry *aio_write_behind_list; /* Per-share list of files to use aio write behind on. */
 475         struct dfree_cached_info *dfree_info;
 476         struct trans_state *pending_trans;
 477
 478         struct rpc_pipe_client *spoolss_pipe;
 479
 480 } connection_struct;
 481
 482 struct smbd_smb2_request;
 483 struct privilege_paths;
 484
 485 struct smb_request {
 486         uint8_t cmd;
 487         uint16_t flags2;
 488         uint16_t smbpid;
 489         uint64_t mid; /* For compatibility with SMB2. */
 490         uint32_t seqnum;
 491         uint64_t vuid; /* For compatibility with SMB2. */
 492         uint32_t tid;
 493         uint8_t  wct;
 494         const uint16_t *vwv;
 495         uint16_t buflen;
 496         const uint8_t *buf;
 497         const uint8_t *inbuf;
 498
 499         /*
 500          * Async handling in the main smb processing loop is directed by
 501          * outbuf: reply_xxx routines indicate sync behaviour by putting their
 502          * reply into "outbuf". If they leave it as NULL, they take care of it
 503          * themselves, possibly later.
 504          *
 505          * If async handling is wanted, the reply_xxx routine must make sure
 506          * that it talloc_move()s the smb_req somewhere else.
 507          */
 508         uint8_t *outbuf;
 509
 510         size_t unread_bytes;
 511         bool encrypted;
 512         connection_struct *conn;
 513         struct smbd_server_connection *sconn;
 514         struct smbXsrv_connection *xconn;
 515         struct smb_perfcount_data pcd;
 516
 517         /*
 518          * Chained request handling
 519          */
 520         struct files_struct *chain_fsp;
 521
 522         /*
 523          * state information for async smb handling
 524          */
 525         void *async_priv;
 526
 527         /*
 528          * Back pointer to smb2 request.
 529          */
 530         struct smbd_smb2_request *smb2req;
 531
 532         /*
 533          * Pathnames used if request done
 534          * under privilege.
 535          */
 536         struct privilege_paths *priv_paths;
 537
 538         /*
 539          * Request list for chained requests, we're part of it.
 540          */
 541         struct smb_request **chain;
 542
 543         struct timeval request_time;
 544
 545         bool posix_pathnames;
 546 };
 547
 548 /*
 549  * Info about an alternate data stream
 550  */
 551
 552 struct stream_struct {
 553         off_t size;
 554         off_t alloc_size;
 555         char *name;
 556 };
 557
 558 /* time info */
 559 struct smb_file_time {
 560         struct timespec mtime;
 561         struct timespec atime;
 562         struct timespec ctime;
 563         struct timespec create_time;
 564 };
 565
 566 /*
 567  * smb_filename
 568  */
 569 struct smb_filename {
 570         char *base_name;
 571         char *stream_name;
 572         char *original_lcomp;
 573         uint32_t flags;
 574         SMB_STRUCT_STAT st;
 575 };
 576
 577 /*
 578  * smb_filename flags. Define in terms of the FSP_POSIX_FLAGS_XX
 579  * to keep the numeric values consistent.
 580  */
 581
 582 #define SMB_FILENAME_POSIX_PATH         FSP_POSIX_FLAGS_PATHNAMES
 583
 584 #define VFS_FIND(__fn__) while (handle->fns->__fn__##_fn==NULL) { \
 585                                 handle = handle->next; \
 586                          }
 587
 588 enum vfs_translate_direction {
 589         vfs_translate_to_unix = 0,
 590         vfs_translate_to_windows
 591 };
 592
 593 enum vfs_fallocate_flags {
 594         VFS_FALLOCATE_FL_KEEP_SIZE              = 0x0001,
 595         VFS_FALLOCATE_FL_PUNCH_HOLE             = 0x0002,
 596 };
 597
 598 struct vfs_aio_state {
 599         int error;
 600         uint64_t duration;
 601 };
 602
 603 /*
 604     Available VFS operations. These values must be in sync with vfs_ops struct
 605     (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
 606     In particular, if new operations are added to vfs_ops, appropriate constants
 607     should be added to vfs_op_type so that order of them kept same as in vfs_ops.
 608 */
 609 struct shadow_copy_data;
 610
 611 struct vfs_fn_pointers {
 612         /* Disk operations */
 613
 614         int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
 615         void (*disconnect_fn)(struct vfs_handle_struct *handle);
 616         uint64_t (*disk_free_fn)(struct vfs_handle_struct *handle,
 617                                 const struct smb_filename *smb_fname,
 618                                 uint64_t *bsize,
 619                                 uint64_t *dfree,
 620                                 uint64_t *dsize);
 621         int (*get_quota_fn)(struct vfs_handle_struct *handle,
 622                                 const struct smb_filename *smb_fname,
 623                                 enum SMB_QUOTA_TYPE qtype,
 624                                 unid_t id,
 625                                 SMB_DISK_QUOTA *qt);
 626         int (*set_quota_fn)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
 627         int (*get_shadow_copy_data_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, struct shadow_copy_data *shadow_copy_data, bool labels);
 628         int (*statvfs_fn)(struct vfs_handle_struct *handle,
 629                                 const struct smb_filename *smb_fname,
 630                                 struct vfs_statvfs_struct *statbuf);
 631         uint32_t (*fs_capabilities_fn)(struct vfs_handle_struct *handle, enum timestamp_set_resolution *p_ts_res);
 632
 633         /*
 634          * Note: that "struct dfs_GetDFSReferral *r"
 635          * needs to be a valid TALLOC_CTX
 636          */
 637         NTSTATUS (*get_dfs_referrals_fn)(struct vfs_handle_struct *handle,
 638                                          struct dfs_GetDFSReferral *r);
 639
 640         /* Directory operations */
 641
 642         DIR *(*opendir_fn)(struct vfs_handle_struct *handle,
 643                                         const struct smb_filename *smb_fname,
 644                                         const char *mask,
 645                                         uint32_t attributes);
 646         DIR *(*fdopendir_fn)(struct vfs_handle_struct *handle, files_struct *fsp, const char *mask, uint32_t attributes);
 647         struct dirent *(*readdir_fn)(struct vfs_handle_struct *handle,
 648                                          DIR *dirp,
 649                                          SMB_STRUCT_STAT *sbuf);
 650         void (*seekdir_fn)(struct vfs_handle_struct *handle, DIR *dirp, long offset);
 651         long (*telldir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 652         void (*rewind_dir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 653         int (*mkdir_fn)(struct vfs_handle_struct *handle,
 654                         const struct smb_filename *smb_fname,
 655                         mode_t mode);
 656         int (*rmdir_fn)(struct vfs_handle_struct *handle,
 657                         const struct smb_filename *smb_fname);
 658         int (*closedir_fn)(struct vfs_handle_struct *handle, DIR *dir);
 659         void (*init_search_op_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 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     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 void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
1149                                  DIR *dirp);
1150 int smb_vfs_call_open(struct vfs_handle_struct *handle,
1151                       struct smb_filename *smb_fname, struct files_struct *fsp,
1152                       int flags, mode_t mode);
1153 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1154                                   struct smb_request *req,
1155                                   uint16_t root_dir_fid,
1156                                   struct smb_filename *smb_fname,
1157                                   uint32_t access_mask,
1158                                   uint32_t share_access,
1159                                   uint32_t create_disposition,
1160                                   uint32_t create_options,
1161                                   uint32_t file_attributes,
1162                                   uint32_t oplock_request,
1163                                   struct smb2_lease *lease,
1164                                   uint64_t allocation_size,
1165                                   uint32_t private_flags,
1166                                   struct security_descriptor *sd,
1167                                   struct ea_list *ea_list,
1168                                   files_struct **result,
1169                                   int *pinfo,
1170                                   const struct smb2_create_blobs *in_context_blobs,
1171                                   struct smb2_create_blobs *out_context_blobs);
1172 int smb_vfs_call_close(struct vfs_handle_struct *handle,
1173                        struct files_struct *fsp);
1174 ssize_t smb_vfs_call_read(struct vfs_handle_struct *handle,
1175                           struct files_struct *fsp, void *data, size_t n);
1176 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1177                            struct files_struct *fsp, void *data, size_t n,
1178                            off_t offset);
1179 struct tevent_req *smb_vfs_call_pread_send(struct vfs_handle_struct *handle,
1180                                            TALLOC_CTX *mem_ctx,
1181                                            struct tevent_context *ev,
1182                                            struct files_struct *fsp,
1183                                            void *data,
1184                                            size_t n, off_t offset);
1185 ssize_t SMB_VFS_PREAD_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1186
1187 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
1188                            struct files_struct *fsp, const void *data,
1189                            size_t n);
1190 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1191                             struct files_struct *fsp, const void *data,
1192                             size_t n, off_t offset);
1193 struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
1194                                             TALLOC_CTX *mem_ctx,
1195                                             struct tevent_context *ev,
1196                                             struct files_struct *fsp,
1197                                             const void *data,
1198                                             size_t n, off_t offset);
1199 ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1200
1201 off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1202                              struct files_struct *fsp, off_t offset,
1203                              int whence);
1204 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1205                               files_struct *fromfsp, const DATA_BLOB *header,
1206                               off_t offset, size_t count);
1207 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1208                               files_struct *tofsp, off_t offset,
1209                               size_t count);
1210 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
1211                         const struct smb_filename *smb_fname_src,
1212                         const struct smb_filename *smb_fname_dst);
1213 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
1214                        struct files_struct *fsp);
1215
1216 struct tevent_req *smb_vfs_call_fsync_send(struct vfs_handle_struct *handle,
1217                                            TALLOC_CTX *mem_ctx,
1218                                            struct tevent_context *ev,
1219                                            struct files_struct *fsp);
1220 int SMB_VFS_FSYNC_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1221
1222 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1223                       struct smb_filename *smb_fname);
1224 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1225                        struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
1226 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1227                        struct smb_filename *smb_filename);
1228 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1229                                      struct files_struct *fsp,
1230                                      const SMB_STRUCT_STAT *sbuf);
1231 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
1232                         const struct smb_filename *smb_fname);
1233 int smb_vfs_call_chmod(struct vfs_handle_struct *handle,
1234                         const struct smb_filename *smb_fname,
1235                         mode_t mode);
1236 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1237                         struct files_struct *fsp, mode_t mode);
1238 int smb_vfs_call_chown(struct vfs_handle_struct *handle,
1239                         const struct smb_filename *smb_fname,
1240                         uid_t uid,
1241                         gid_t gid);
1242 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1243                         struct files_struct *fsp, uid_t uid, gid_t gid);
1244 int smb_vfs_call_lchown(struct vfs_handle_struct *handle,
1245                         const struct smb_filename *smb_fname,
1246                         uid_t uid,
1247                         gid_t gid);
1248 int smb_vfs_call_chdir(struct vfs_handle_struct *handle,
1249                         const struct smb_filename *smb_fname);
1250 struct smb_filename *smb_vfs_call_getwd(struct vfs_handle_struct *handle,
1251                                 TALLOC_CTX *ctx);
1252 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
1253                         const struct smb_filename *smb_fname,
1254                         struct smb_file_time *ft);
1255 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
1256                            struct files_struct *fsp, off_t offset);
1257 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
1258                            struct files_struct *fsp,
1259                            uint32_t mode,
1260                            off_t offset,
1261                            off_t len);
1262 bool smb_vfs_call_lock(struct vfs_handle_struct *handle,
1263                        struct files_struct *fsp, int op, off_t offset,
1264                        off_t count, int type);
1265 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
1266                               struct files_struct *fsp, uint32_t share_mode,
1267                               uint32_t access_mask);
1268 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
1269                                 struct files_struct *fsp, int leasetype);
1270 bool smb_vfs_call_getlock(struct vfs_handle_struct *handle,
1271                           struct files_struct *fsp, off_t *poffset,
1272                           off_t *pcount, int *ptype, pid_t *ppid);
1273 int smb_vfs_call_symlink(struct vfs_handle_struct *handle,
1274                         const char *link_contents,
1275                         const struct smb_filename *new_smb_fname);
1276 int smb_vfs_call_readlink(struct vfs_handle_struct *handle,
1277                         const struct smb_filename *smb_fname,
1278                         char *buf,
1279                         size_t bufsiz);
1280 int smb_vfs_call_link(struct vfs_handle_struct *handle,
1281                         const struct smb_filename *old_smb_fname,
1282                         const struct smb_filename *new_smb_fname);
1283 int smb_vfs_call_mknod(struct vfs_handle_struct *handle,
1284                         const struct smb_filename *smb_fname,
1285                         mode_t mode,
1286                         SMB_DEV_T dev);
1287 struct smb_filename *smb_vfs_call_realpath(struct vfs_handle_struct *handle,
1288                         TALLOC_CTX *ctx,
1289                         const struct smb_filename *smb_fname);
1290 int smb_vfs_call_chflags(struct vfs_handle_struct *handle,
1291                         const struct smb_filename *smb_fname,
1292                         unsigned int flags);
1293 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
1294                                            const SMB_STRUCT_STAT *sbuf);
1295 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
1296                                  struct files_struct *fsp,
1297                                  const struct smb_filename *smb_fname,
1298                                  TALLOC_CTX *mem_ctx,
1299                                  unsigned int *num_streams,
1300                                  struct stream_struct **streams);
1301 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
1302                                    const char *path, const char *name,
1303                                    TALLOC_CTX *mem_ctx, char **found_name);
1304 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
1305                                      const struct smb_filename *smb_fname);
1306 NTSTATUS smb_vfs_call_brl_lock_windows(struct vfs_handle_struct *handle,
1307                                        struct byte_range_lock *br_lck,
1308                                        struct lock_struct *plock,
1309                                        bool blocking_lock);
1310 bool smb_vfs_call_brl_unlock_windows(struct vfs_handle_struct *handle,
1311                                      struct messaging_context *msg_ctx,
1312                                      struct byte_range_lock *br_lck,
1313                                      const struct lock_struct *plock);
1314 bool smb_vfs_call_brl_cancel_windows(struct vfs_handle_struct *handle,
1315                                      struct byte_range_lock *br_lck,
1316                                      struct lock_struct *plock);
1317 bool smb_vfs_call_strict_lock_check(struct vfs_handle_struct *handle,
1318                                     struct files_struct *fsp,
1319                                     struct lock_struct *plock);
1320 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
1321                                      const char *name,
1322                                      enum vfs_translate_direction direction,
1323                                      TALLOC_CTX *mem_ctx,
1324                                      char **mapped_name);
1325 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
1326                             struct files_struct *fsp,
1327                             TALLOC_CTX *ctx,
1328                             uint32_t function,
1329                             uint16_t req_flags,
1330                             const uint8_t *_in_data,
1331                             uint32_t in_len,
1332                             uint8_t **_out_data,
1333                             uint32_t max_out_len,
1334                             uint32_t *out_len);
1335 NTSTATUS smb_vfs_call_get_dos_attributes(struct vfs_handle_struct *handle,
1336                                          struct smb_filename *smb_fname,
1337                                          uint32_t *dosmode);
1338 NTSTATUS smb_vfs_call_fget_dos_attributes(struct vfs_handle_struct *handle,
1339                                           struct files_struct *fsp,
1340                                           uint32_t *dosmode);
1341 NTSTATUS smb_vfs_call_set_dos_attributes(struct vfs_handle_struct *handle,
1342                                          const struct smb_filename *smb_fname,
1343                                          uint32_t dosmode);
1344 NTSTATUS smb_vfs_call_fset_dos_attributes(struct vfs_handle_struct *handle,
1345                                           struct files_struct *fsp,
1346                                           uint32_t dosmode);
1347 struct tevent_req *smb_vfs_call_offload_read_send(
1348         TALLOC_CTX *mem_ctx,
1349         struct tevent_context *ev,
1350         struct vfs_handle_struct *handle,
1351         struct files_struct *fsp,
1352         uint32_t fsctl,
1353         uint32_t ttl,
1354         off_t offset,
1355         size_t to_copy);
1356 NTSTATUS smb_vfs_call_offload_read_recv(struct tevent_req *req,
1357                                         struct vfs_handle_struct *handle,
1358                                         TALLOC_CTX *mem_ctx,
1359                                         DATA_BLOB *token_blob);
1360 struct tevent_req *smb_vfs_call_offload_write_send(struct vfs_handle_struct *handle,
1361                                                    TALLOC_CTX *mem_ctx,
1362                                                    struct tevent_context *ev,
1363                                                    uint32_t fsctl,
1364                                                    DATA_BLOB *token,
1365                                                    off_t transfer_offset,
1366                                                    struct files_struct *dest_fsp,
1367                                                    off_t dest_off,
1368                                                    off_t num);
1369 NTSTATUS smb_vfs_call_offload_write_recv(struct vfs_handle_struct *handle,
1370                                          struct tevent_req *req,
1371                                          off_t *copied);
1372 NTSTATUS smb_vfs_call_get_compression(struct vfs_handle_struct *handle,
1373                                       TALLOC_CTX *mem_ctx,
1374                                       struct files_struct *fsp,
1375                                       struct smb_filename *smb_fname,
1376                                       uint16_t *_compression_fmt);
1377 NTSTATUS smb_vfs_call_set_compression(struct vfs_handle_struct *handle,
1378                                       TALLOC_CTX *mem_ctx,
1379                                       struct files_struct *fsp,
1380                                       uint16_t compression_fmt);
1381 NTSTATUS smb_vfs_call_snap_check_path(vfs_handle_struct *handle,
1382                                       TALLOC_CTX *mem_ctx,
1383                                       const char *service_path,
1384                                       char **base_volume);
1385 NTSTATUS smb_vfs_call_snap_create(struct vfs_handle_struct *handle,
1386                                   TALLOC_CTX *mem_ctx,
1387                                   const char *base_volume,
1388                                   time_t *tstamp,
1389                                   bool rw,
1390                                   char **base_path,
1391                                   char **snap_path);
1392 NTSTATUS smb_vfs_call_snap_delete(struct vfs_handle_struct *handle,
1393                                   TALLOC_CTX *mem_ctx,
1394                                   char *base_path,
1395                                   char *snap_path);
1396 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
1397                                   struct files_struct *fsp,
1398                                   uint32_t security_info,
1399                                   TALLOC_CTX *mem_ctx,
1400                                   struct security_descriptor **ppdesc);
1401 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
1402                                  const struct smb_filename *smb_fname,
1403                                  uint32_t security_info,
1404                                  TALLOC_CTX *mem_ctx,
1405                                  struct security_descriptor **ppdesc);
1406 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
1407                                   struct files_struct *fsp,
1408                                   uint32_t security_info_sent,
1409                                   const struct security_descriptor *psd);
1410 NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
1411                                  struct smb_filename *file,
1412                                  struct security_acl *sacl,
1413                                  uint32_t access_requested,
1414                                  uint32_t access_denied);
1415 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle,
1416                                 const struct smb_filename *file,
1417                                 mode_t mode);
1418 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
1419                             struct files_struct *fsp, mode_t mode);
1420 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
1421                                         const struct smb_filename *smb_fname,
1422                                         SMB_ACL_TYPE_T type,
1423                                         TALLOC_CTX *mem_ctx);
1424 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
1425                                       struct files_struct *fsp,
1426                                       TALLOC_CTX *mem_ctx);
1427 int smb_vfs_call_sys_acl_blob_get_file(struct vfs_handle_struct *handle,
1428                                        const struct smb_filename *smb_fname,
1429                                        TALLOC_CTX *mem_ctx,
1430                                        char **blob_description,
1431                                        DATA_BLOB *blob);
1432 int smb_vfs_call_sys_acl_blob_get_fd(struct vfs_handle_struct *handle,
1433                                      struct files_struct *fsp,
1434                                      TALLOC_CTX *mem_ctx,
1435                                      char **blob_description,
1436                                      DATA_BLOB *blob);
1437 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
1438                                 const struct smb_filename *smb_fname,
1439                                 SMB_ACL_TYPE_T acltype,
1440                                 SMB_ACL_T theacl);
1441 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
1442                                 struct files_struct *fsp, SMB_ACL_T theacl);
1443 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1444                                 const struct smb_filename *smb_fname);
1445 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
1446                                 const struct smb_filename *smb_fname,
1447                                 const char *name,
1448                                 void *value,
1449                                 size_t size);
1450 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
1451                                struct files_struct *fsp, const char *name,
1452                                void *value, size_t size);
1453 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
1454                                 const struct smb_filename *smb_fname,
1455                                 char *list,
1456                                 size_t size);
1457 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
1458                                 struct files_struct *fsp, char *list,
1459                                 size_t size);
1460 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
1461                                 const struct smb_filename *smb_fname,
1462                                 const char *name);
1463 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
1464                               struct files_struct *fsp, const char *name);
1465 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle,
1466                                 const struct smb_filename *smb_fname,
1467                                 const char *name,
1468                                 const void *value,
1469                                 size_t size,
1470                                 int flags);
1471 int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
1472                            const char *name, const void *value, size_t size,
1473                            int flags);
1474 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
1475                            struct files_struct *fsp, const char *name,
1476                            const void *value, size_t size, int flags);
1477 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
1478                             struct files_struct *fsp);
1479 bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
1480                              const struct smb_filename *fname,
1481                              SMB_STRUCT_STAT *sbuf);
1482 int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
1483                              const struct smb_filename *fname);
1484 NTSTATUS smb_vfs_call_durable_cookie(struct vfs_handle_struct *handle,
1485                                      struct files_struct *fsp,
1486                                      TALLOC_CTX *mem_ctx,
1487                                      DATA_BLOB *cookie);
1488 NTSTATUS smb_vfs_call_durable_disconnect(struct vfs_handle_struct *handle,
1489                                          struct files_struct *fsp,
1490                                          const DATA_BLOB old_cookie,
1491                                          TALLOC_CTX *mem_ctx,
1492                                          DATA_BLOB *new_cookie);
1493 NTSTATUS smb_vfs_call_durable_reconnect(struct vfs_handle_struct *handle,
1494                                         struct smb_request *smb1req,
1495                                         struct smbXsrv_open *op,
1496                                         const DATA_BLOB old_cookie,
1497                                         TALLOC_CTX *mem_ctx,
1498                                         struct files_struct **fsp,
1499                                         DATA_BLOB *new_cookie);
1500 NTSTATUS smb_vfs_call_readdir_attr(struct vfs_handle_struct *handle,
1501                                    const struct smb_filename *fname,
1502                                    TALLOC_CTX *mem_ctx,
1503                                    struct readdir_attr_data **attr_data);
1504
1505 NTSTATUS smb_register_vfs(int version, const char *name,
1506                           const struct vfs_fn_pointers *fns);
1507 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
1508                                    files_struct *fsp, size_t ext_size,
1509                                    void (*destroy_fn)(void *p_data));
1510 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1511 void vfs_remove_all_fsp_extensions(struct files_struct *fsp);
1512 void *vfs_memctx_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1513 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1514
1515 void smb_vfs_assert_all_fns(const struct vfs_fn_pointers* fns,
1516                             const char *module);
1517
1518 #endif /* _VFS_H */