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