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