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 /*
  50  * Changed to version 2 for CIFS UNIX extensions (mknod and link added). JRA.
  51  * Changed to version 3 for POSIX acl extensions. JRA.
  52  * Changed to version 4 for cascaded VFS interface. Alexander Bokovoy.
  53  * Changed to version 5 for sendfile addition. JRA.
  54  * Changed to version 6 for the new module system, fixed cascading and quota functions. --metze
  55  * Changed to version 7 to include the get_nt_acl info parameter. JRA.
  56  * Changed to version 8 includes EA calls. JRA.
  57  * Changed to version 9 to include the get_shadow_data call. --metze
  58  * Changed to version 10 to include pread pwrite calls.
  59  * Changed to version 11 to include seekdir telldir rewinddir calls. JRA
  60  * Changed to version 12 to add mask and attributes to opendir(). JRA
  61  * Also include aio calls. JRA.
  62  * Changed to version 13 as the internal structure of files_struct has changed. JRA
  63  * Changed to version 14 as we had to change DIR to SMB_STRUCT_DIR. JRA
  64  * Changed to version 15 as we added the statvfs call. JRA
  65  * Changed to version 16 as we added the getlock call. JRA
  66  * Changed to version 17 as we removed redundant connection_struct parameters. --jpeach
  67  * Changed to version 18 to add fsp parameter to the open call -- jpeach
  68  * Also include kernel_flock call - jmcd
  69  * Changed to version 19, kernel change notify has been merged
  70  * Also included linux setlease call - jmcd
  71  * Changed to version 20, use ntimes call instead of utime (greater
  72  * timestamp resolition. JRA.
  73  * Changed to version21 to add chflags operation -- jpeach
  74  * Changed to version22 to add lchown operation -- jra
  75  * Leave at 22 - not yet released. But change set_nt_acl to return an NTSTATUS. jra.
  76  * Leave at 22 - not yet released. Add file_id_create operation. --metze
  77  * Leave at 22 - not yet released. Change all BOOL parameters (int) to bool. jra.
  78  * Leave at 22 - not yet released. Added recvfile.
  79  * Leave at 22 - not yet released. Change get_nt_acl to return NTSTATUS - vl
  80  * Leave at 22 - not yet released. Change get_nt_acl to *not* take a
  81  * files_struct. - obnox.
  82  * Leave at 22 - not yet released. Remove parameter fd from fget_nt_acl. - obnox
  83  * Leave at 22 - not yet released. Remove parameter fd from gset_nt_acl. - obnox
  84  * Leave at 22 - not yet released. Remove parameter fd from pread. - obnox
  85  * Leave at 22 - not yet released. Remove parameter fd from pwrite. - obnox
  86  * Leave at 22 - not yet released. Remove parameter fd from lseek. - obnox
  87  * Leave at 22 - not yet released. Remove parameter fd from fsync. - obnox
  88  * Leave at 22 - not yet released. Remove parameter fd from fstat. - obnox
  89  * Leave at 22 - not yet released. Remove parameter fd from fchmod. - obnox
  90  * Leave at 22 - not yet released. Remove parameter fd from fchown. - obnox
  91  * Leave at 22 - not yet released. Remove parameter fd from ftruncate. - obnox
  92  * Leave at 22 - not yet released. Remove parameter fd from lock. - obnox
  93  * Leave at 22 - not yet released. Remove parameter fd from kernel_flock. - obnox
  94  * Leave at 22 - not yet released. Remove parameter fd from linux_setlease. - obnox
  95  * Leave at 22 - not yet released. Remove parameter fd from getlock. - obnox
  96  * Leave at 22 - not yet released. Remove parameter fd from sys_acl_get_fd. - obnox
  97  * Leave at 22 - not yet released. Remove parameter fd from fchmod_acl. - obnox
  98  * Leave at 22 - not yet released. Remove parameter fd from sys_acl_set_fd. - obnox
  99  * Leave at 22 - not yet released. Remove parameter fd from fgetxattr. - obnox
 100  * Leave at 22 - not yet released. Remove parameter fd from flistxattr. - obnox
 101  * Leave at 22 - not yet released. Remove parameter fd from fremovexattr. - obnox
 102  * Leave at 22 - not yet released. Remove parameter fd from fsetxattr. - obnox
 103  * Leave at 22 - not yet released. Remove parameter fd from aio_cancel. - obnox
 104  * Leave at 22 - not yet released. Remove parameter fd from read. - obnox
 105  * Leave at 22 - not yet released. Remove parameter fd from write. - obnox
 106  * Leave at 22 - not yet released. Remove parameter fromfd from sendfile. - obnox
 107  * Leave at 22 - not yet released. Remove parameter fromfd from recvfile. - obnox
 108  * Leave at 22 - not yet released. Additional change: add operations for offline files -- ab
 109  * Leave at 22 - not yet released. Add the streaminfo call. -- jpeach, vl
 110  * Leave at 22 - not yet released. Remove parameter fd from close_fn. - obnox
 111  * Changed to version 23 - remove set_nt_acl call. This can only be done via an
 112  *                         open handle. JRA.
 113  * Changed to version 24 - make security descriptor const in fset_nt_acl. JRA.
 114  * Changed to version 25 - Jelmer's change from SMB_BIG_UINT to uint64_t.
 115  * Leave at 25 - not yet released. Add create_file call. -- tprouty.
 116  * Leave at 25 - not yet released. Add create time to ntimes. -- tstecher.
 117  * Leave at 25 - not yet released. Add get_alloc_size call. -- tprouty.
 118  * Leave at 25 - not yet released. Add SMB_STRUCT_STAT to readdir. - sdann
 119  * Leave at 25 - not yet released. Add init_search_op call. - sdann
 120  * Leave at 25 - not yet released. Add locking calls. -- zkirsch.
 121  * Leave at 25 - not yet released. Add strict locking calls. -- drichards.
 122  * Changed to version 26 - Plumb struct smb_filename to SMB_VFS_CREATE_FILE,
 123  *                         SMB_VFS_OPEN, SMB_VFS_STAT, SMB_VFS_LSTAT,
 124  *                         SMB_VFS_RENAME, SMB_VFS_UNLINK, SMB_VFS_NTIMES.
 125  * Changed to version 27 - not yet released. Added enum timestamp_set_resolution
 126  *                         return to fs_capabilities call. JRA.
 127  * Leave at 27 - not yet released. Add translate_name VFS call to convert
 128  *               UNIX names to Windows supported names -- asrinivasan.
 129  * Changed to version 28 - Add private_flags uint32_t to CREATE call.
 130  * Leave at 28 - not yet released. Change realpath to assume NULL and return a
 131  *               malloc'ed path. JRA.
 132  * Leave at 28 - not yet released. Move posix_fallocate into the VFS
 133  *              where it belongs. JRA.
 134  * Leave at 28 - not yet released. Rename posix_fallocate to fallocate
 135  *              to split out the two possible uses. JRA.
 136  * Leave at 28 - not yet released. Add fdopendir. JRA.
 137  * Leave at 28 - not yet released. Rename open function to open_fn. - gd
 138  * Leave at 28 - not yet released. Make getwd function always return malloced memory. JRA.
 139  * Bump to version 29 - Samba 3.6.0 will ship with interface version 28.
 140  * Leave at 29 - not yet releases. Add fsctl. Richard Sharpe
 141  * Leave at 29 - not yet released. add SMB_VFS_GET_DFS_REFERRAL() - metze
 142  * Leave at 29 - not yet released. Remove l{list,get,set,remove}xattr - abartlet
 143  * Leave at 29 - not yet released. move to plain off_t - abartlet
 144  * Leave at 29 - not yet released. Remove sys_acl functions other than set and get - abartlet
 145  * Leave at 29 - not yet released. Added backup_intent bool to files_struct - JRA
 146  * Leave at 29 - not yet released. Add durable handle functions - metze obnox
 147  * Leave at 29 - not yet released. Added sys_acl_blob_get_file and sys_acl_blob_get_fd
 148  * Bump to version 30 - Samba 4.0.0 will ship with interface version 30
 149  * Leave at 30 - not yet released. Added conn->cwd to save vfs_GetWd() calls.
 150  * Leave at 30 - not yet released. Changed sys_acl_blob_get_file interface to remove type
 151  * Bump to version 31 - Samba 4.1.0 will ship with interface version 31
 152  * Leave at 31 - not yet released. Make struct vuid_cache_entry in
 153  *               connection_struct a pointer.
 154  * Leave at 31 - not yet released. Add share_access to vuid_cache_entry.
 155  * Leave at 31 - not yet released. add SMB_VFS_COPY_CHUNK()
 156  * Leave at 31 - not yet released. Remove the unused
 157  *               fsp->pending_break_messages array
 158  * Leave at 31 - not yet released. add SMB_VFS_[GET SET]_COMPRESSION()
 159  *
 160  * Bump to version 32 - Samba 4.2 will ship with that.
 161  * Version 32 - Add "lease" to CREATE_FILE operation
 162  * Version 32 - Add "lease" to struct files_struct
 163  * Version 32 - Add SMB_VFS_READDIR_ATTR()
 164  * Version 32 - Add in and out create context blobs to create_file
 165  * Version 32 - Remove unnecessary SMB_VFS_DISK_FREE() small_query parameter
 166  * Bump to version 33 - Samba 4.3 will ship with that.
 167  * Version 33 - change fallocate mode flags param from enum->uint32_t
 168  * Version 33 - Add snapshot create delete calls
 169  * Version 33 - Add OS X SMB2 AAPL copyfile extension flag to fsp
 170  * Version 33 - Remove notify_watch_fn
 171  * Bump to version 34 - Samba 4.4 will ship with that
 172  * Version 34 - Remove bool posix_open, add uint64_t posix_flags
 173  * Version 34 - Added bool posix_pathnames to struct smb_request
 174  * Bump to version 35 - Samba 4.5 will ship with that
 175  * Version 35 - Change get_nt_acl_fn from const char *, to
 176  *              const struct smb_filename *
 177  * Version 35 - Change mkdir from const char *, to
 178  *              const struct smb_filename *
 179  * Version 35 - Change rmdir from const char *, to
 180  *              const struct smb_filename *
 181  * Version 35 - Change opendir from const char *, to
 182  *              const struct smb_filename *
 183  * Version 35 - Wrap aio async funtions args in a struct vfs_aio_state
 184  * Version 35 - Change chmod from const char *, to
 185  *              const struct smb_filename *
 186  * Version 35 - Change chmod_acl from const char *, to
 187  *              const struct smb_filename *
 188  * Version 35 - Change chown from const char *, to
 189  *              const struct smb_filename *
 190  * Version 35 - Change lchown from const char *, to
 191  *              const struct smb_filename *
 192  * Version 35 - Change streaminfo from const char *, to
 193  *              const struct smb_filename *
 194  * Version 35 - Add uint32_t flags to struct smb_filename
 195  * Version 35 - Add get set fget fset dos attribute functions.
 196  * Version 35 - Add bool use_ofd_locks to struct files_struct
 197  * Bump to version 36 - Samba 4.6 will ship with that
 198  * Version 36 - Remove is_offline and set_offline
 199  * Version 37 - Module init functions now take a TALLOC_CTX * parameter.
 200  * Version 37 - Add vfs_copy_chunk_flags for DUP_EXTENTS_TO_FILE
 201  * Version 37 - Change sys_acl_delete_def_file from const char *
 202  *              to const struct smb_filename *
 203  * Version 37 - Change sys_acl_get_file from const char *
 204  *              to const struct smb_filename *
 205  * Version 37 - Change sys_acl_blob_get_file from const char *
 206  *              to const struct smb_filename *
 207  * Version 37 - Change sys_acl_set_file from const char *
 208  *              to const struct smb_filename *
 209  * Version 37 - Change listxattr from const char *
 210  *              to const struct smb_filename *
 211  * Version 37 - Change removexattr from const char *
 212  *              to const struct smb_filename *
 213  * Version 37 - Change setxattr from const char *
 214  *              to const struct smb_filename *
 215  * Version 37 - Change getxattr from const char *
 216  *              to const struct smb_filename *
 217  * Version 37 - Change mknod from const char * to const struct smb_filename *
 218  * Version 37 - Change chflags from const char *
 219  *              to const struct smb_filename *
 220  * Version 37 - Change disk_free from const char *
 221  *              to const struct smb_filename *
 222  * Version 37 - Change get_quota from const char *
 223  *              to const struct smb_filename *
 224  * Version 37 - Change link from const char *
 225  *              to const struct smb_filename *
 226  * Version 37 - Change statvfs from const char *
 227  *              to const struct smb_filename *
 228  * Version 37 - Change readlink from const char *
 229  *              to const struct smb_filename *
 230  * Version 37 - Change symlink from const char *
 231  *              to const struct smb_filename *
 232  * Version 37 - Change chdir from const char *
 233  *              to const struct smb_filename *
 234  * Version 37 - Change getwd from char *
 235  *              to const struct smb_filename *
 236  * Version 37 - Change conn->cwd from char *
 237  *              to struct smb_filename *
 238  * Version 37 - Change realpath from char *
 239  *              to struct smb_filename *
 240  * Version 37 - Change connectpath from char *
 241  *              to struct smb_filename *
 242  * Version 37 - Add SMB_VFS_OFFLOAD_READ_SEND RECV
 243  * Version 37 - Rename SMB_VFS_COPY_CHUNK_SEND RECV to
 244  *              SMB_VFS_OFFLOAD_READ_SEND RECV
 245  * Version 37 - Remove SMB_VFS_STRICT_UNLOCK
 246  * Version 37 - Rename SMB_VFS_STRICT_LOCK to
 247  *              SMB_VFS_STRICT_LOCK_CHECK
 248  * Version 38 - Remove SMB_VFS_INIT_SEARCH_OP
 249  * Bump to version 39, Samba 4.9 will ship with that
 250  * Version 39 - Remove SMB_VFS_FSYNC
 251  *              Only implement async versions.
 252  * Version 39 - Remove SMB_VFS_READ
 253  *              All users are now pread or async versions.
 254  * Version 39 - Remove SMB_VFS_WRITE
 255  *              All users are now pwrite or async versions.
 256  * Version 39 - Remove SMB_VFS_CHMOD_ACL - no longer used.
 257  * Version 39 - Remove SMB_VFS_FCHMOD_ACL - no longer used.
 258  * Version 39 - Remove struct dfree_cached_info pointer from
 259  *              connection struct
 260  * Bump to version 40, Samba 4.10 will ship with that
 261  * Version 40 - Add SMB_VFS_GETXATTRAT_SEND RECV
 262  * Version 40 - Add SMB_VFS_GET_DOS_ATTRIBUTES_SEND RECV
 263  * Bump to version 41, Samba 4.11 will ship with that
 264  * Version 41 - Remove SMB_VFS_BRL_CANCEL_WINDOWS
 265  * Version 41 - Remove unused st_ex_mask from struct stat_ex
 266  * Version 41 - convert struct stat_ex.st_ex_calculated_birthtime to flags
 267  * Version 41 - add st_ex_itime to struct stat_ex
 268  * Version 41 - add st_ex_file_id to struct stat_ex
 269  * Version 41 - add SMB_VFS_FS_FILE_ID
 270  * Version 41 - Remove "blocking_lock" parameter from
 271  *              SMB_VFS_BRL_LOCK_WINDOWS
 272  * Version 41 - Remove "msg_ctx" parameter from SMB_VFS_BRL_UNLOCK_WINDOWS
 273  * Bump to version 42, Samba 4.12 will ship with that
 274  * Version 42 - Remove share_access member from struct files_struct
 275  * Version 42 - Make "lease" a const* in create_file_fn
 276  * Version 42 - Move SMB_VFS_RENAME -> SMB_VFS_RENAMEAT
 277  * Version 42 - Move SMB_VFS_LINK -> SMB_VFS_LINKAT.
 278  * Version 42 - Move SMB_VFS_MKNOD -> SMB_VFS_MKDNODAT.
 279  * Version 42 - Move SMB_VFS_READLINK -> SMB_VFS_READLINKAT.
 280  * Version 42 - Move SMB_VFS_SYMLINK -> SMB_VFS_SYMLINKAT.
 281  * Version 42 - Move SMB_VFS_MKDIR -> SMB_VFS_MKDIRAT.
 282  * Version 42 - Move change_to_user() -> change_to_user_and_service()
 283  * Version 42 - Move change_to_user_by_fsp() -> change_to_user_and_service_by_fsp()
 284  * Version 42 - Move [un]become_user*() -> [un]become_user_without_service*()
 285  * Version 42 - Move SMB_VFS_UNLINK -> SMB_VFS_UNLINKAT.
 286  * Version 42 - Add SMB_VFS_FCNTL
 287  * Version 42 - Remove SMB_VFS_RMDIR.
 288  *              Use SMB_VFS_UNLINKAT(.., AT_REMOVEDIR) instead.
 289  * Version 42 - Remove SMB_VFS_CHOWN
 290  * Version 42 - Remove struct write_cache *wcp from files_struct
 291  * Version 42 - SMB_VFS_NTIMES() receives null times based on UTIMES_OMIT
 292  * Version 42 - Add SMB_VFS_CREATE_DFS_PATHAT()
 293  * Version 42 - Add SMB_VFS_READ_DFS_PATHAT()
 294  * Change to Version 43 - will ship with 4.13.
 295  * Version 43 - Remove deferred_close from struct files_struct
 296  * Version 43 - Remove SMB_VFS_OPENDIR()
 297  * Version 43 - Remove original_lcomp from struct smb_filename
 298  * Version 43 - files_struct flags:
 299  *              bool kernel_share_modes_taken
 300  *              bool update_write_time_triggered
 301  *              bool update_write_time_on_close
 302  *              bool write_time_forced
 303  *              bool can_lock
 304  *              bool can_read
 305  *              bool can_write
 306  *              bool modified
 307  *              bool is_directory
 308  *              bool aio_write_behind
 309  *              bool initial_delete_on_close
 310  *              bool delete_on_close
 311  *              bool is_sparse
 312  *              bool backup_intent
 313  *              bool use_ofd_locks
 314  *              bool closing
 315  *              bool lock_failure_seen
 316  *              changed to bitfields.
 317  * Version 43 - convert SMB_VFS_GET_REAL_FILENAME() arg path
 318  *              to be a struct smb_filename
 319  * Version 43 - convert link_contents arg of SMB_VFS_SYMLINKAT()
 320  *              to struct smb_filename
 321  * Version 43 - Move SMB_VFS_GET_NT_ACL() -> SMB_VFS_GET_NT_ACL_AT().
 322  * Version 43 - Remove root_dir_fid from SMB_VFS_CREATE_FILE().
 323  * Version 43 - Add dirfsp to struct files_struct
 324  * Version 43 - Add dirfsp args to SMB_VFS_CREATE_FILE()
 325  * Version 43 - Add SMB_VFS_OPENAT()
 326  * Version 43 - Remove SMB_VFS_OPEN()
 327  * Version 43 - SMB_VFS_READ_DFS_PATHAT() should take a non-const name.
 328                 There's no easy way to return stat info for a DFS link
 329                 otherwise.
 330  * Change to Version 44 - will ship with 4.14.
 331  * Version 44 - Remove dirfsp arg from struct files_struct
 332  * Version 44 - Remove dirfsp arg to SMB_VFS_CREATE_FILE()
 333  * Version 44 - Make dirfsp arg to SMB_VFS_READLINKAT() const
 334  * Version 44 - Add a flag 'encryption_required' to files_struct that that
 335  *              prevents that encrypted connections can be downgraded.
 336  * Version 44 - Add a flag 'is_pathref' to struct files_struct.
 337  * Version 44 - Add 'is_fsa' flag to struct files_struct.
 338  * Version 44 - Add 'have_proc_fds' flag to struct connection_struct.
 339  * Version 44 - Add 'have_proc_fds' flag to struct files_struct.
 340  * Version 44 - Add dirfsp arg to SMB_VFS_READDIR()
 341  * Version 44 - Replace SMB_VFS_GET_COMPRESSION() with SMB_VFS_FGET_COMPRESSION()
 342  * Version 44 - Add type argument to SMB_VFS_SYS_ACL_SET_FD()
 343  * Version 44 - Remove SMB_VFS_SYS_ACL_SET_FILE()
 344  * Change to Version 45 - will ship with 4.15
 345  * Version 45 - Remove SMB_VFS_LISTXATTR
 346  * Version 45 - Remove SMB_VFS_SETXATTR
 347  * Version 45 - Remove SMB_VFS_REMOVEXATTR
 348  * Version 45 - Remove SMB_VFS_GET_DOS_ATTRIBUTES()
 349  * Version 45 - Remove SMB_VFS_CHMOD
 350  * Version 45 - Add SMB_VFS_FNTIMES
 351  * Version 45 - Remove SMB_VFS_NTIMES
 352  * Version 45 - ADD SMB_VFS_FSTREAMINFO
 353  * Version 45 - Add SMB_VFS_FREADDIR_ATTR
 354  * Version 45 - Remove SMB_VFS_READDIR_ATTR
 355  * Version 45 - Add SMB_VFS_SYS_ACL_DELETE_DEF_FD
 356  */
 357
 358 #define SMB_VFS_INTERFACE_VERSION 45
 359
 360 /*
 361     All intercepted VFS operations must be declared as static functions inside module source
 362     in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
 363     example VFS modules for more details.
 364 */
 365
 366 /* VFS operations structure */
 367
 368 struct vfs_handle_struct;
 369 struct connection_struct;
 370 struct files_struct;
 371 struct security_descriptor;
 372 struct vfs_statvfs_struct;
 373 struct smb_request;
 374 struct ea_list;
 375 struct smb_file_time;
 376 struct smb_filename;
 377 struct dfs_GetDFSReferral;
 378
 379 typedef union unid_t {
 380         uid_t uid;
 381         gid_t gid;
 382 } unid_t;
 383
 384 struct fd_handle;
 385
 386 struct fsp_lease {
 387         size_t ref_count;
 388         struct smbd_server_connection *sconn;
 389         struct tevent_timer *timeout;
 390         struct smb2_lease lease;
 391 };
 392
 393 typedef struct files_struct {
 394         struct files_struct *next, *prev;
 395         uint64_t fnum;
 396         struct smbXsrv_open *op;
 397         struct connection_struct *conn;
 398         struct fd_handle *fh;
 399         unsigned int num_smb_operations;
 400         struct file_id file_id;
 401         uint64_t initial_allocation_size; /* Faked up initial allocation on disk. */
 402         uint16_t file_pid;
 403         uint64_t vuid; /* SMB2 compat */
 404         struct timeval open_time;
 405         uint32_t access_mask;           /* NTCreateX access bits (FILE_READ_DATA etc.) */
 406         struct {
 407                 bool is_pathref : 1; /* See below */
 408                 bool is_fsa : 1;     /* See below */
 409                 bool have_proc_fds : 1;
 410                 bool kernel_share_modes_taken : 1;
 411                 bool update_write_time_triggered : 1;
 412                 bool update_write_time_on_close : 1;
 413                 bool write_time_forced : 1;
 414                 bool can_lock : 1;
 415                 bool can_read : 1;
 416                 bool can_write : 1;
 417                 bool modified : 1;
 418                 bool is_directory : 1;
 419                 bool is_dirfsp : 1;
 420                 bool aio_write_behind : 1;
 421                 bool initial_delete_on_close : 1;
 422                 bool delete_on_close : 1;
 423                 bool is_sparse : 1;
 424                 bool backup_intent : 1;
 425                 bool use_ofd_locks : 1;
 426                 bool closing : 1;
 427                 bool lock_failure_seen : 1;
 428                 bool encryption_required : 1;
 429         } fsp_flags;
 430
 431         struct tevent_timer *update_write_time_event;
 432         struct timespec close_write_time;
 433
 434         int oplock_type;
 435
 436         /*
 437          * Cache of our lease_type, stored as "current_state" in
 438          * leases.tdb
 439          */
 440         int leases_db_seqnum;
 441         uint32_t lease_type;
 442
 443         struct fsp_lease *lease;
 444         int sent_oplock_break;
 445         struct tevent_timer *oplock_timeout;
 446         struct lock_struct last_lock_failure;
 447         int current_lock_count; /* Count the number of outstanding locks and pending locks. */
 448
 449         uint64_t posix_flags;
 450         struct smb_filename *fsp_name;
 451         uint32_t name_hash;             /* Jenkins hash of full pathname. */
 452         uint64_t mid;                   /* Mid of the operation that created us. */
 453
 454         struct vfs_fsp_data *vfs_extension;
 455         struct fake_file_handle *fake_file_handle;
 456
 457         struct notify_change_buf *notify;
 458
 459         struct files_struct *base_fsp; /* placeholder for delete on close */
 460         struct files_struct *stream_fsp; /* backlink from base_fsp */
 461
 462         /*
 463          * Cache of share_mode_data->flags
 464          */
 465         int share_mode_flags_seqnum;
 466         uint16_t share_mode_flags;
 467
 468         /*
 469          * Read-only cached brlock record, thrown away when the
 470          * brlock.tdb seqnum changes. This avoids fetching data from
 471          * the brlock.tdb on every read/write call.
 472          */
 473         int brlock_seqnum;
 474         struct byte_range_lock *brlock_rec;
 475
 476         struct dptr_struct *dptr;
 477
 478         /* if not NULL, means this is a print file */
 479         struct print_file_data *print_file;
 480
 481         /*
 482          * Optimize the aio_requests array for high performance: Never
 483          * shrink it, maintain num_aio_requests separately
 484          */
 485         unsigned num_aio_requests;
 486         struct tevent_req **aio_requests;
 487
 488         /*
 489          * Requests waiting for smb1 byte range locks. They are
 490          * generated by smbd_smb1_do_locks_send and are required here,
 491          * because lock cancel operations index through reply_lockingX
 492          * not based on mid but on the lock type and range.
 493          */
 494         struct tevent_req **blocked_smb1_lock_reqs;
 495
 496         /*
 497          * SMB1 remembers lock failures and delays repeated blocking
 498          * lock attempts on the same offset.
 499          */
 500         uint64_t lock_failure_offset;
 501 } files_struct;
 502
 503 /*
 504  * The fsp flags "is_pathref" and "is_fsa"
 505  * =======================================
 506  *
 507  * Summary
 508  * -------
 509  *
 510  * The flag "is_pathref" is a property of the low-level VFS-layer file
 511  * handle. If "is_pathref" is true, only a subset of VFS calls are allowed
 512  * on the handle and on systems that support it, the low-level fd is open
 513  * with O_PATH. If "is_pathref" is false, the low-level fd is a "normal"
 514  * file descriptor that can be used with all VFS calls.
 515  *
 516  * The flag "is_fsa" is a property of the FSA layer in Samba. The term FSA
 517  * layer refers to the parts of smbs that implement Windows NTFS semantics
 518  * on-top of a POSIX filesystem. If "is_fsa" is true, the fsp was
 519  * processed by the SMB_VFS_CREATE_FILE() VFS call, otherwise the fsp was
 520  * created by openat_pathref_fsp() which only connected the low-level
 521  * handle by calling into VFS SMB_VFS_OPENAT(), but the whole FSA layer
 522  * logic is skipped.
 523  *
 524  * Note that only three possible combinations of "is_pathref" and "is_fsa"
 525  * are possible:
 526  *
 527  * | is_fsa \ is_pathref | + | - |
 528  * |---------------------+---+---|
 529  * | +                   | + | + |
 530  * | -                   | + | - |
 531  *
 532  * So a fsp can't be a full low-level fd (is_pathref=false) and not be
 533  * processed by the FSA layer.
 534  *
 535  * Details
 536  * -------
 537  *
 538  * On Linux the O_PATH flag to open() can be used to open a filehandle on
 539  * a file or directory with interesting properties:
 540  *
 541  * - the file-handle indicates a location in the filesystem tree,
 542  * - no permission checks are done by the kernel and
 543  * - only operations that act purely at the file descriptor level are
 544  *   allowed.
 545  *
 546  * The file itself is not opened, and other file operations (e.g.,
 547  * read(2), write(2), fchmod(2), fchown(2), fgetxattr(2), ioctl(2),
 548  * mmap(2)) fail with the error EBADF.
 549  *
 550  * The following subset of operations that is relevant to Samba is allowed:
 551  *
 552  * - close(2),
 553  * - fchdir(2), if the file descriptor refers to a directory,
 554  * - fstat(2),
 555  * - fstatfs(2) and
 556  * - passing the file descriptor as the dirfd argument of openat() and the
 557  *   other "*at()" system calls. This includes linkat(2) with
 558  *   AT_EMPTY_PATH (or via procfs using AT_SYMLINK_FOLLOW) even if the
 559  *   file is not a directory.
 560  *
 561  * Opening a file or directory with the O_PATH flag requires no
 562  * permissions on the object itself (but does require execute permission
 563  * on the directories in the path prefix). By contrast, obtaining a
 564  * reference to a filesystem object by opening it with the O_RDONLY flag
 565  * requires that the caller have read permission on the object, even when
 566  * the subsequent operation (e.g., fchdir(2), fstat(2)) does not require
 567  * read permis‐ sion on the object. [1]
 568  *
 569  * If for example Samba receives an SMB request to open a file requesting
 570  * SEC_FILE_READ_ATTRIBUTE access rights because the client wants to read
 571  * the file's metadata from the handle, Samba will have to call POSIX
 572  * open() with at least O_RDONLY access rights.
 573  *
 574  * Usecase for O_PATH in Samba
 575  * ---------------------------
 576  *
 577  * By leveraging this Linux specific flags we can avoid permission
 578  * mismatches as described above. Additionally O_PATH allows basing all
 579  * filesystem accesses done by the fileserver on handle based syscalls by
 580  * opening all client pathnames with O_PATH and consistently using for
 581  * example fstat() instead of stat() throughout the codebase.
 582  *
 583  * Subsequently we will refer to Samba file-handles (fsp's) opened with
 584  * O_PATH "path referencing fsp's" or "pathref" fsp's for short.
 585  *
 586  * Currently Samba bases the decision whether to call POSIX open() on a
 587  * client pathname or whether to leave the low-level handle at -1, what we
 588  * call a stat-open, in the function open_file() and it is based on the
 589  * client requested SMB acccess mask.
 590  *
 591  * The set of rights that trigger an open() include READ_CONTROL_ACCESS,
 592  * resulting in a call to open() with at least O_RDONLY. If the filesystem
 593  * supports NT style ACLs natively (like GPFS or ZFS), the filesystem may
 594  * grant the user requested right READ_CONTROL_ACCESS, but it may not
 595  * grant READ_DATA (O_RDONLY), resulting in a permission denied error.
 596  *
 597  * Historically the set of access rights that triggered opening a file was:
 598  *
 599  *   FILE_READ_DATA
 600  *   FILE_WRITE_DATA
 601  *   FILE_APPEND_DATA
 602  *   FILE_EXECUTE
 603  *   WRITE_DAC_ACCESS
 604  *   WRITE_OWNER_ACCESS
 605  *   SEC_FLAG_SYSTEM_SECURITY
 606  *   READ_CONTROL_ACCESS
 607  *
 608  * By using O_PATH this can be trimmed down to
 609  *
 610  *   FILE_READ_DATA
 611  *   FILE_WRITE_DATA
 612  *   FILE_APPEND_DATA
 613  *   FILE_EXECUTE
 614  *
 615  * Fallback on systems without O_PATH support
 616  * ------------------------------------------
 617  *
 618  * A fallback is needed that allows opening a file-handle with the same
 619  * higher level semantics even if the system doesn't support O_PATH. This
 620  * is implemented by qimpersonating the root user for the open()
 621  * syscall. To avoid bypassing restrictive permissions on intermediate
 622  * directories components of a path, the root user is only impersonated
 623  * after changing directory to the parent directory of the client
 624  * requested pathname.
 625  *
 626  * In order to avoid privilege escalation security issues with these root
 627  * opened file-handles we must carefully control their usage throughout
 628  * the codebase. Therefor we
 629  *
 630  * - tag the pathref fsp's with the flag "is_pathref" and
 631  *
 632  * - control access to the file-handle by making the structure private and only
 633  *   allowing access with accessor functions.
 634  *
 635  * Two functions are used to fetch the low-level system file-handle from an fsp
 636  *
 637  * - fsp_get_io_fd(fsp): enforces fsp is NOT a pathref file-handle and
 638  *
 639  * - fsp_get_pathref_fd(fsp): allows fsp to be either a pathref file-handle or a
 640  *   traditional POSIX file-handle opened with O_RDONLY or any other POSIX open
 641  *   flag.
 642  *
 643  * The general guideline when to use which function is:
 644  *
 645  * - if you do something like fstat(fd), use fsp_get_pathref_fd(fsp),
 646  * - if you do something like *at(dirfd, ...), use fsp_get_pathref_fd(fsp),
 647  * - if you want to print the fd for example in DEBUG messages, use
 648  *   fsp_get_pathref_fd(fsp),
 649  * - if you want to call close(fd), use fsp_get_pathref_fd(fsp),
 650  * - if you're doing a logical comparison of fd values, use
 651  *   fsp_get_pathref_fd().
 652  *
 653  * In any other case use fsp_get_io_fd().
 654  */
 655
 656 #define FSP_POSIX_FLAGS_OPEN            0x01
 657 #define FSP_POSIX_FLAGS_RENAME          0x02
 658 #define FSP_POSIX_FLAGS_PATHNAMES       0x04
 659
 660 #define FSP_POSIX_FLAGS_ALL                     \
 661         (FSP_POSIX_FLAGS_OPEN |                 \
 662          FSP_POSIX_FLAGS_PATHNAMES |            \
 663          FSP_POSIX_FLAGS_RENAME)
 664
 665 struct vuid_cache_entry {
 666         struct auth_session_info *session_info;
 667         uint64_t vuid; /* SMB2 compat */
 668         bool read_only;
 669         uint32_t share_access;
 670 };
 671
 672 struct vuid_cache {
 673         unsigned int next_entry;
 674         struct vuid_cache_entry array[VUID_CACHE_SIZE];
 675 };
 676
 677 typedef struct {
 678         char *name;
 679         bool is_wild;
 680 } name_compare_entry;
 681
 682 struct share_params {
 683         int service;
 684 };
 685
 686 typedef struct connection_struct {
 687         struct connection_struct *next, *prev;
 688         struct smbd_server_connection *sconn; /* can be NULL */
 689         struct smbXsrv_tcon *tcon; /* can be NULL */
 690         uint32_t cnum; /* an index passed over the wire */
 691         struct share_params *params;
 692         bool force_user;
 693         struct vuid_cache *vuid_cache;
 694         bool printer;
 695         bool ipc;
 696         bool read_only; /* Attributes for the current user of the share. */
 697         bool have_proc_fds;
 698         uint32_t share_access;
 699         /* Does this filesystem honor
 700            sub second timestamps on files
 701            and directories when setting time ? */
 702         enum timestamp_set_resolution ts_res;
 703         char *connectpath;
 704         struct files_struct *cwd_fsp; /* Working directory. */
 705         bool tcon_done;
 706
 707         struct vfs_handle_struct *vfs_handles;          /* for the new plugins */
 708
 709         /*
 710          * This represents the user information on this connection. Depending
 711          * on the vuid using this tid, this might change per SMB request.
 712          */
 713         struct auth_session_info *session_info;
 714
 715         /*
 716          * If the "force group" parameter is set, this is the primary gid that
 717          * may be used in the users token, depending on the vuid using this tid.
 718          */
 719         gid_t force_group_gid;
 720
 721         uint64_t vuid; /* vuid of user who *opened* this connection, or UID_FIELD_INVALID */
 722
 723         time_t lastused;
 724         time_t lastused_count;
 725         int num_files_open;
 726         unsigned int num_smb_operations; /* Count of smb operations on this tree. */
 727         int encrypt_level;
 728         bool encrypted_tid;
 729
 730         /* Semantics requested by the client or forced by the server config. */
 731         bool case_sensitive;
 732         bool case_preserve;
 733         bool short_case_preserve;
 734
 735         /* Semantics provided by the underlying filesystem. */
 736         int fs_capabilities;
 737         /* Device number of the directory of the share mount.
 738            Used to ensure unique FileIndex returns. */
 739         SMB_DEV_T base_share_dev;
 740
 741         name_compare_entry *hide_list; /* Per-share list of files to return as hidden. */
 742         name_compare_entry *veto_list; /* Per-share list of files to veto (never show). */
 743         name_compare_entry *veto_oplock_list; /* Per-share list of files to refuse oplocks on. */
 744         name_compare_entry *aio_write_behind_list; /* Per-share list of files to use aio write behind on. */
 745         struct trans_state *pending_trans;
 746
 747         struct rpc_pipe_client *spoolss_pipe;
 748
 749 } connection_struct;
 750
 751 struct smbd_smb2_request;
 752 struct referral;
 753
 754 struct smb_request {
 755         uint8_t cmd;
 756         uint16_t flags2;
 757         uint16_t smbpid;
 758         uint64_t mid; /* For compatibility with SMB2. */
 759         uint32_t seqnum;
 760         uint64_t vuid; /* For compatibility with SMB2. */
 761         uint32_t tid;
 762         uint8_t  wct;
 763         const uint16_t *vwv;
 764         uint16_t buflen;
 765         const uint8_t *buf;
 766         const uint8_t *inbuf;
 767
 768         /*
 769          * Async handling in the main smb processing loop is directed by
 770          * outbuf: reply_xxx routines indicate sync behaviour by putting their
 771          * reply into "outbuf". If they leave it as NULL, they take care of it
 772          * themselves, possibly later.
 773          *
 774          * If async handling is wanted, the reply_xxx routine must make sure
 775          * that it talloc_move()s the smb_req somewhere else.
 776          */
 777         uint8_t *outbuf;
 778
 779         size_t unread_bytes;
 780         bool encrypted;
 781         connection_struct *conn;
 782         struct smbd_server_connection *sconn;
 783         struct smbXsrv_connection *xconn;
 784
 785         /*
 786          * Pointer to session, can be NULL,
 787          * eg during negprot and session setup.
 788          */
 789         struct smbXsrv_session *session;
 790
 791         struct smb_perfcount_data pcd;
 792
 793         /*
 794          * Chained request handling
 795          */
 796         struct files_struct *chain_fsp;
 797
 798         /*
 799          * state information for async smb handling
 800          */
 801         void *async_priv;
 802
 803         /*
 804          * Back pointer to smb2 request.
 805          */
 806         struct smbd_smb2_request *smb2req;
 807
 808         /*
 809          * Request list for chained requests, we're part of it.
 810          */
 811         struct smb_request **chain;
 812
 813         struct timeval request_time;
 814
 815         bool posix_pathnames;
 816 };
 817
 818 /*
 819  * Info about an alternate data stream
 820  */
 821
 822 struct stream_struct {
 823         off_t size;
 824         off_t alloc_size;
 825         char *name;
 826 };
 827
 828 /* time info */
 829 struct smb_file_time {
 830         struct timespec mtime;
 831         struct timespec atime;
 832         struct timespec ctime;
 833         struct timespec create_time;
 834 };
 835
 836 /*
 837  * smb_filename
 838  */
 839 struct smb_filename {
 840         char *base_name;
 841         char *stream_name;
 842         uint32_t flags;
 843         SMB_STRUCT_STAT st;
 844         NTTIME twrp;
 845
 846         /*
 847          * Internal file handle, O_PATH based if available,
 848          * otherwise O_RDONLY as root.
 849          */
 850         struct files_struct *fsp;
 851
 852         /*
 853          * Link between the struct smb_filename and the above
 854          * fsp. fsp_link is a talloc child of the fsp. Ensures a possible
 855          * talloc_free(fsp) resets the smb_fname->fsp pointer to NULL in
 856          * the is fsp_link talloc destructor.
 857          */
 858         struct fsp_smb_fname_link *fsp_link;
 859 };
 860
 861 /*
 862  * smb_filename flags. Define in terms of the FSP_POSIX_FLAGS_XX
 863  * to keep the numeric values consistent.
 864  */
 865
 866 #define SMB_FILENAME_POSIX_PATH         FSP_POSIX_FLAGS_PATHNAMES
 867
 868 #define VFS_FIND(__fn__) while (handle->fns->__fn__##_fn==NULL) { \
 869                                 handle = handle->next; \
 870                          }
 871
 872 enum vfs_translate_direction {
 873         vfs_translate_to_unix = 0,
 874         vfs_translate_to_windows
 875 };
 876
 877 enum vfs_fallocate_flags {
 878         VFS_FALLOCATE_FL_KEEP_SIZE              = 0x0001,
 879         VFS_FALLOCATE_FL_PUNCH_HOLE             = 0x0002,
 880 };
 881
 882 struct vfs_aio_state {
 883         int error;
 884         uint64_t duration;
 885 };
 886
 887 /*
 888     Available VFS operations. These values must be in sync with vfs_ops struct
 889     (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
 890     In particular, if new operations are added to vfs_ops, appropriate constants
 891     should be added to vfs_op_type so that order of them kept same as in vfs_ops.
 892 */
 893 struct shadow_copy_data;
 894
 895 struct vfs_fn_pointers {
 896         /* Disk operations */
 897
 898         int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
 899         void (*disconnect_fn)(struct vfs_handle_struct *handle);
 900         uint64_t (*disk_free_fn)(struct vfs_handle_struct *handle,
 901                                 const struct smb_filename *smb_fname,
 902                                 uint64_t *bsize,
 903                                 uint64_t *dfree,
 904                                 uint64_t *dsize);
 905         int (*get_quota_fn)(struct vfs_handle_struct *handle,
 906                                 const struct smb_filename *smb_fname,
 907                                 enum SMB_QUOTA_TYPE qtype,
 908                                 unid_t id,
 909                                 SMB_DISK_QUOTA *qt);
 910         int (*set_quota_fn)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
 911         int (*get_shadow_copy_data_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, struct shadow_copy_data *shadow_copy_data, bool labels);
 912         int (*statvfs_fn)(struct vfs_handle_struct *handle,
 913                                 const struct smb_filename *smb_fname,
 914                                 struct vfs_statvfs_struct *statbuf);
 915         uint32_t (*fs_capabilities_fn)(struct vfs_handle_struct *handle, enum timestamp_set_resolution *p_ts_res);
 916
 917         /*
 918          * Note: that "struct dfs_GetDFSReferral *r"
 919          * needs to be a valid TALLOC_CTX
 920          */
 921         NTSTATUS (*get_dfs_referrals_fn)(struct vfs_handle_struct *handle,
 922                                          struct dfs_GetDFSReferral *r);
 923         NTSTATUS (*create_dfs_pathat_fn)(struct vfs_handle_struct *handle,
 924                                 struct files_struct *dirfsp,
 925                                 const struct smb_filename *smb_fname,
 926                                 const struct referral *reflist,
 927                                 size_t referral_count);
 928         NTSTATUS (*read_dfs_pathat_fn)(struct vfs_handle_struct *handle,
 929                                 TALLOC_CTX *mem_ctx,
 930                                 struct files_struct *dirfsp,
 931                                 struct smb_filename *smb_fname,
 932                                 struct referral **ppreflist,
 933                                 size_t *preferral_count);
 934
 935         /* Directory operations */
 936
 937         DIR *(*fdopendir_fn)(struct vfs_handle_struct *handle, files_struct *fsp, const char *mask, uint32_t attributes);
 938         struct dirent *(*readdir_fn)(struct vfs_handle_struct *handle,
 939                                      struct files_struct *dirfsp,
 940                                      DIR *dirp,
 941                                      SMB_STRUCT_STAT *sbuf);
 942         void (*seekdir_fn)(struct vfs_handle_struct *handle, DIR *dirp, long offset);
 943         long (*telldir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 944         void (*rewind_dir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 945         int (*mkdirat_fn)(struct vfs_handle_struct *handle,
 946                         struct files_struct *dirfsp,
 947                         const struct smb_filename *smb_fname,
 948                         mode_t mode);
 949         int (*closedir_fn)(struct vfs_handle_struct *handle, DIR *dir);
 950
 951         /* File operations */
 952
 953         int (*openat_fn)(struct vfs_handle_struct *handle,
 954                          const struct files_struct *dirfsp,
 955                          const struct smb_filename *smb_fname,
 956                          struct files_struct *fsp,
 957                          int flags,
 958                          mode_t mode);
 959         NTSTATUS (*create_file_fn)(struct vfs_handle_struct *handle,
 960                                    struct smb_request *req,
 961                                    struct smb_filename *smb_fname,
 962                                    uint32_t access_mask,
 963                                    uint32_t share_access,
 964                                    uint32_t create_disposition,
 965                                    uint32_t create_options,
 966                                    uint32_t file_attributes,
 967                                    uint32_t oplock_request,
 968                                    const struct smb2_lease *lease,
 969                                    uint64_t allocation_size,
 970                                    uint32_t private_flags,
 971                                    struct security_descriptor *sd,
 972                                    struct ea_list *ea_list,
 973                                    files_struct **result,
 974                                    int *pinfo,
 975                                    const struct smb2_create_blobs *in_context_blobs,
 976                                    struct smb2_create_blobs *out_context_blobs);
 977         int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 978         ssize_t (*pread_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n, off_t offset);
 979         struct tevent_req *(*pread_send_fn)(struct vfs_handle_struct *handle,
 980                                             TALLOC_CTX *mem_ctx,
 981                                             struct tevent_context *ev,
 982                                             struct files_struct *fsp,
 983                                             void *data,
 984                                             size_t n, off_t offset);
 985         ssize_t (*pread_recv_fn)(struct tevent_req *req, struct vfs_aio_state *state);
 986         ssize_t (*pwrite_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n, off_t offset);
 987         struct tevent_req *(*pwrite_send_fn)(struct vfs_handle_struct *handle,
 988                                              TALLOC_CTX *mem_ctx,
 989                                              struct tevent_context *ev,
 990                                              struct files_struct *fsp,
 991                                              const void *data,
 992                                              size_t n, off_t offset);
 993         ssize_t (*pwrite_recv_fn)(struct tevent_req *req, struct vfs_aio_state *state);
 994         off_t (*lseek_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset, int whence);
 995         ssize_t (*sendfile_fn)(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *header, off_t offset, size_t count);
 996         ssize_t (*recvfile_fn)(struct vfs_handle_struct *handle, int fromfd, files_struct *tofsp, off_t offset, size_t count);
 997         int (*renameat_fn)(struct vfs_handle_struct *handle,
 998                          struct files_struct *srcdir_fsp,
 999                          const struct smb_filename *smb_fname_src,
1000                          struct files_struct *dstdir_fsp,
1001                          const struct smb_filename *smb_fname_dst);
1002         struct tevent_req *(*fsync_send_fn)(struct vfs_handle_struct *handle,
1003                                             TALLOC_CTX *mem_ctx,
1004                                             struct tevent_context *ev,
1005                                             struct files_struct *fsp);
1006         int (*fsync_recv_fn)(struct tevent_req *req, struct vfs_aio_state *state);
1007         int (*stat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_fname);
1008         int (*fstat_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
1009         int (*lstat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_filename);
1010         uint64_t (*get_alloc_size_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_STAT *sbuf);
1011         int (*unlinkat_fn)(struct vfs_handle_struct *handle,
1012                         struct files_struct *srcdir_fsp,
1013                         const struct smb_filename *smb_fname,
1014                         int flags);
1015         int (*fchmod_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
1016         int (*fchown_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, uid_t uid, gid_t gid);
1017         int (*lchown_fn)(struct vfs_handle_struct *handle,
1018                         const struct smb_filename *smb_fname,
1019                         uid_t uid,
1020                         gid_t gid);
1021         int (*chdir_fn)(struct vfs_handle_struct *handle,
1022                          const struct smb_filename *smb_fname);
1023         struct smb_filename *(*getwd_fn)(struct vfs_handle_struct *handle,
1024                                 TALLOC_CTX *mem_ctx);
1025         int (*fntimes_fn)(struct vfs_handle_struct *handle,
1026                           struct files_struct *fsp,
1027                           struct smb_file_time *ft);
1028         int (*ftruncate_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset);
1029         int (*fallocate_fn)(struct vfs_handle_struct *handle,
1030                             struct files_struct *fsp,
1031                             uint32_t mode,
1032                             off_t offset,
1033                             off_t len);
1034         bool (*lock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, off_t offset, off_t count, int type);
1035         int (*kernel_flock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp,
1036                                uint32_t share_access, uint32_t access_mask);
1037         int (*fcntl_fn)(struct vfs_handle_struct *handle,
1038                         struct files_struct *fsp, int cmd, va_list cmd_arg);
1039         int (*linux_setlease_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int leasetype);
1040         bool (*getlock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid);
1041         int (*symlinkat_fn)(struct vfs_handle_struct *handle,
1042                                 const struct smb_filename *link_contents,
1043                                 struct files_struct *dirfsp,
1044                                 const struct smb_filename *new_smb_fname);
1045         int (*readlinkat_fn)(struct vfs_handle_struct *handle,
1046                                 const struct files_struct *dirfsp,
1047                                 const struct smb_filename *smb_fname,
1048                                 char *buf,
1049                                 size_t bufsiz);
1050         int (*linkat_fn)(struct vfs_handle_struct *handle,
1051                                 struct files_struct *srcfsp,
1052                                 const struct smb_filename *old_smb_fname,
1053                                 struct files_struct *dstfsp,
1054                                 const struct smb_filename *new_smb_fname,
1055                                 int flags);
1056         int (*mknodat_fn)(struct vfs_handle_struct *handle,
1057                                 struct files_struct *dirfsp,
1058                                 const struct smb_filename *smb_fname,
1059                                 mode_t mode,
1060                                 SMB_DEV_T dev);
1061         struct smb_filename *(*realpath_fn)(struct vfs_handle_struct *handle,
1062                                 TALLOC_CTX *ctx,
1063                                 const struct smb_filename *smb_fname);
1064         int (*chflags_fn)(struct vfs_handle_struct *handle,
1065                                 const struct smb_filename *smb_fname,
1066                                 unsigned int flags);
1067         struct file_id (*file_id_create_fn)(struct vfs_handle_struct *handle,
1068                                             const SMB_STRUCT_STAT *sbuf);
1069         uint64_t (*fs_file_id_fn)(struct vfs_handle_struct *handle,
1070                                   const SMB_STRUCT_STAT *sbuf);
1071         struct tevent_req *(*offload_read_send_fn)(TALLOC_CTX *mem_ctx,
1072                                                    struct tevent_context *ev,
1073                                                    struct vfs_handle_struct *handle,
1074                                                    struct files_struct *fsp,
1075                                                    uint32_t fsctl,
1076                                                    uint32_t ttl,
1077                                                    off_t offset,
1078                                                    size_t to_copy);
1079         NTSTATUS (*offload_read_recv_fn)(struct tevent_req *req,
1080                                          struct vfs_handle_struct *handle,
1081                                          TALLOC_CTX *mem_ctx,
1082                                          DATA_BLOB *token_blob);
1083         struct tevent_req *(*offload_write_send_fn)(struct vfs_handle_struct *handle,
1084                                                     TALLOC_CTX *mem_ctx,
1085                                                     struct tevent_context *ev,
1086                                                     uint32_t fsctl,
1087                                                     DATA_BLOB *token,
1088                                                     off_t transfer_offset,
1089                                                     struct files_struct *dest_fsp,
1090                                                     off_t dest_off,
1091                                                     off_t to_copy);
1092         NTSTATUS (*offload_write_recv_fn)(struct vfs_handle_struct *handle,
1093                                           struct tevent_req *req,
1094                                           off_t *copied);
1095         NTSTATUS (*fget_compression_fn)(struct vfs_handle_struct *handle,
1096                                        TALLOC_CTX *mem_ctx,
1097                                        struct files_struct *fsp,
1098                                        uint16_t *_compression_fmt);
1099         NTSTATUS (*set_compression_fn)(struct vfs_handle_struct *handle,
1100                                        TALLOC_CTX *mem_ctx,
1101                                        struct files_struct *fsp,
1102                                        uint16_t compression_fmt);
1103         NTSTATUS (*snap_check_path_fn)(struct vfs_handle_struct *handle,
1104                                        TALLOC_CTX *mem_ctx,
1105                                        const char *service_path,
1106                                        char **base_volume);
1107         NTSTATUS (*snap_create_fn)(struct vfs_handle_struct *handle,
1108                                    TALLOC_CTX *mem_ctx,
1109                                    const char *base_volume,
1110                                    time_t *tstamp,
1111                                    bool rw,
1112                                    char **base_path,
1113                                    char **snap_path);
1114         NTSTATUS (*snap_delete_fn)(struct vfs_handle_struct *handle,
1115                                    TALLOC_CTX *mem_ctx,
1116                                    char *base_path,
1117                                    char *snap_path);
1118
1119         NTSTATUS (*fstreaminfo_fn)(struct vfs_handle_struct *handle,
1120                                    struct files_struct *fsp,
1121                                    TALLOC_CTX *mem_ctx,
1122                                    unsigned int *num_streams,
1123                                    struct stream_struct **streams);
1124
1125         int (*get_real_filename_fn)(struct vfs_handle_struct *handle,
1126                                     const struct smb_filename *path,
1127                                     const char *name,
1128                                     TALLOC_CTX *mem_ctx,
1129                                     char **found_name);
1130
1131         const char *(*connectpath_fn)(struct vfs_handle_struct *handle,
1132                                       const struct smb_filename *smb_fname);
1133
1134         NTSTATUS (*brl_lock_windows_fn)(struct vfs_handle_struct *handle,
1135                                         struct byte_range_lock *br_lck,
1136                                         struct lock_struct *plock);
1137
1138         bool (*brl_unlock_windows_fn)(struct vfs_handle_struct *handle,
1139                                       struct byte_range_lock *br_lck,
1140                                       const struct lock_struct *plock);
1141
1142         bool (*strict_lock_check_fn)(struct vfs_handle_struct *handle,
1143                                      struct files_struct *fsp,
1144                                      struct lock_struct *plock);
1145
1146         NTSTATUS (*translate_name_fn)(struct vfs_handle_struct *handle,
1147                                       const char *name,
1148                                       enum vfs_translate_direction direction,
1149                                       TALLOC_CTX *mem_ctx,
1150                                       char **mapped_name);
1151
1152         NTSTATUS (*fsctl_fn)(struct vfs_handle_struct *handle,
1153                              struct files_struct *fsp,
1154                              TALLOC_CTX *ctx,
1155                              uint32_t function,
1156                              uint16_t req_flags,
1157                              const uint8_t *_in_data,
1158                              uint32_t in_len,
1159                              uint8_t **_out_data,
1160                              uint32_t max_out_len,
1161                              uint32_t *out_len);
1162
1163         NTSTATUS (*fget_dos_attributes_fn)(struct vfs_handle_struct *handle,
1164                                            struct files_struct *fsp,
1165                                            uint32_t *dosmode);
1166
1167         NTSTATUS (*fset_dos_attributes_fn)(struct vfs_handle_struct *hande,
1168                                            struct files_struct *fsp,
1169                                            uint32_t dosmode);
1170
1171         struct tevent_req *(*get_dos_attributes_send_fn)(
1172                                 TALLOC_CTX *mem_ctx,
1173                                 struct tevent_context *ev,
1174                                 struct vfs_handle_struct *handle,
1175                                 files_struct *dir_fsp,
1176                                 struct smb_filename *smb_fname);
1177
1178         NTSTATUS (*get_dos_attributes_recv_fn)(
1179                                 struct tevent_req *req,
1180                                 struct vfs_aio_state *aio_state,
1181                                 uint32_t *dosmode);
1182
1183         /* NT ACL operations. */
1184
1185         NTSTATUS (*fget_nt_acl_fn)(struct vfs_handle_struct *handle,
1186                                    struct files_struct *fsp,
1187                                    uint32_t security_info,
1188                                    TALLOC_CTX *mem_ctx,
1189                                    struct security_descriptor **ppdesc);
1190         NTSTATUS (*get_nt_acl_at_fn)(struct vfs_handle_struct *handle,
1191                                 struct files_struct *dirfsp,
1192                                 const struct smb_filename *smb_fname,
1193                                 uint32_t security_info,
1194                                 TALLOC_CTX *mem_ctx,
1195                                 struct security_descriptor **ppdesc);
1196         NTSTATUS (*fset_nt_acl_fn)(struct vfs_handle_struct *handle,
1197                                    struct files_struct *fsp,
1198                                    uint32_t security_info_sent,
1199                                    const struct security_descriptor *psd);
1200
1201         NTSTATUS (*audit_file_fn)(struct vfs_handle_struct *handle,
1202                                   struct smb_filename *file,
1203                                   struct security_acl *sacl,
1204                                   uint32_t access_requested,
1205                                   uint32_t access_denied);
1206
1207         /* POSIX ACL operations. */
1208
1209         SMB_ACL_T (*sys_acl_get_file_fn)(struct vfs_handle_struct *handle,
1210                                          const struct smb_filename *smb_fname,
1211                                          SMB_ACL_TYPE_T type,
1212                                          TALLOC_CTX *mem_ctx);
1213         SMB_ACL_T (*sys_acl_get_fd_fn)(struct vfs_handle_struct *handle,
1214                                        struct files_struct *fsp,
1215                                        TALLOC_CTX *mem_ctx);
1216         int (*sys_acl_blob_get_file_fn)(struct vfs_handle_struct *handle,
1217                                         const struct smb_filename *smb_fname,
1218                                         TALLOC_CTX *mem_ctx,
1219                                         char **blob_description,
1220                                         DATA_BLOB *blob);
1221         int (*sys_acl_blob_get_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp,
1222                                       TALLOC_CTX *mem_ctx, char **blob_description,
1223                                       DATA_BLOB *blob);
1224         int (*sys_acl_set_fd_fn)(struct vfs_handle_struct *handle,
1225                                  struct files_struct *fsp,
1226                                  SMB_ACL_TYPE_T type,
1227                                  SMB_ACL_T theacl);
1228         int (*sys_acl_delete_def_file_fn)(struct vfs_handle_struct *handle,
1229                                         const struct smb_filename *smb_fname);
1230         int (*sys_acl_delete_def_fd_fn)(struct vfs_handle_struct *handle,
1231                                         struct files_struct *fsp);
1232
1233         /* EA operations. */
1234         ssize_t (*getxattr_fn)(struct vfs_handle_struct *handle,
1235                                         const struct smb_filename *smb_fname,
1236                                         const char *name,
1237                                         void *value,
1238                                         size_t size);
1239         struct tevent_req *(*getxattrat_send_fn)(
1240                                 TALLOC_CTX *mem_ctx,
1241                                 struct tevent_context *ev,
1242                                 struct vfs_handle_struct *handle,
1243                                 files_struct *dir_fsp,
1244                                 const struct smb_filename *smb_fname,
1245                                 const char *xattr_name,
1246                                 size_t alloc_hint);
1247         ssize_t (*getxattrat_recv_fn)(struct tevent_req *req,
1248                                       struct vfs_aio_state *aio_state,
1249                                       TALLOC_CTX *mem_ctx,
1250                                       uint8_t **xattr_value);
1251         ssize_t (*fgetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size);
1252         ssize_t (*flistxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size);
1253         int (*fremovexattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name);
1254         int (*fsetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags);
1255
1256         /* aio operations */
1257         bool (*aio_force_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
1258
1259         /* durable handle operations */
1260         NTSTATUS (*durable_cookie_fn)(struct vfs_handle_struct *handle,
1261                                       struct files_struct *fsp,
1262                                       TALLOC_CTX *mem_ctx,
1263                                       DATA_BLOB *cookie);
1264         NTSTATUS (*durable_disconnect_fn)(struct vfs_handle_struct *handle,
1265                                           struct files_struct *fsp,
1266                                           const DATA_BLOB old_cookie,
1267                                           TALLOC_CTX *mem_ctx,
1268                                           DATA_BLOB *new_cookie);
1269         NTSTATUS (*durable_reconnect_fn)(struct vfs_handle_struct *handle,
1270                                          struct smb_request *smb1req,
1271                                          struct smbXsrv_open *op,
1272                                          const DATA_BLOB old_cookie,
1273                                          TALLOC_CTX *mem_ctx,
1274                                          struct files_struct **fsp,
1275                                          DATA_BLOB *new_cookie);
1276
1277         NTSTATUS (*freaddir_attr_fn)(struct vfs_handle_struct *handle,
1278                                      struct files_struct *fsp,
1279                                      TALLOC_CTX *mem_ctx,
1280                                      struct readdir_attr_data **attr_data);
1281 };
1282
1283 /*
1284     VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
1285     which describes all operations this module is willing to intercept.
1286     VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
1287     using this information.
1288 */
1289
1290 typedef struct vfs_handle_struct {
1291         struct vfs_handle_struct  *next, *prev;
1292         const char *param;
1293         struct connection_struct *conn;
1294         const struct vfs_fn_pointers *fns;
1295         void *data;
1296         void (*free_data)(void **data);
1297 } vfs_handle_struct;
1298
1299
1300 typedef struct vfs_statvfs_struct {
1301         /* For undefined recommended transfer size return -1 in that field */
1302         uint32_t OptimalTransferSize;  /* bsize on some os, iosize on other os */
1303         uint32_t BlockSize;
1304
1305         /*
1306          The next three fields are in terms of the block size.
1307          (above). If block size is unknown, 4096 would be a
1308          reasonable block size for a server to report.
1309          Note that returning the blocks/blocksavail removes need
1310          to make a second call (to QFSInfo level 0x103 to get this info.
1311          UserBlockAvail is typically less than or equal to BlocksAvail,
1312          if no distinction is made return the same value in each.
1313         */
1314
1315         uint64_t TotalBlocks;
1316         uint64_t BlocksAvail;       /* bfree */
1317         uint64_t UserBlocksAvail;   /* bavail */
1318
1319         /* For undefined Node fields or FSID return -1 */
1320         uint64_t TotalFileNodes;
1321         uint64_t FreeFileNodes;
1322         uint64_t FsIdentifier;   /* fsid */
1323         /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
1324         /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call   */
1325
1326         int FsCapabilities;
1327 } vfs_statvfs_struct;
1328
1329 /* Add a new FSP extension of the given type. Returns a pointer to the
1330  * extenstion data.
1331  */
1332 #define VFS_ADD_FSP_EXTENSION(handle, fsp, type, destroy_fn)            \
1333     (type *)vfs_add_fsp_extension_notype(handle, (fsp), sizeof(type), (destroy_fn))
1334
1335 /* Return a pointer to the existing FSP extension data. */
1336 #define VFS_FETCH_FSP_EXTENSION(handle, fsp) \
1337     vfs_fetch_fsp_extension(handle, (fsp))
1338
1339 /* Return the talloc context associated with an FSP extension. */
1340 #define VFS_MEMCTX_FSP_EXTENSION(handle, fsp) \
1341     vfs_memctx_fsp_extension(handle, (fsp))
1342
1343 /* Remove and destroy an FSP extension. */
1344 #define VFS_REMOVE_FSP_EXTENSION(handle, fsp) \
1345     vfs_remove_fsp_extension((handle), (fsp))
1346
1347 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
1348         if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
1349                 DEBUG(0,("%s() failed to get vfs_handle->data!\n",__FUNCTION__)); \
1350                 ret; \
1351         } \
1352 }
1353
1354 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
1355         if (!(handle)) { \
1356                 DEBUG(0,("%s() failed to set handle->data!\n",__FUNCTION__)); \
1357                 ret; \
1358         } else { \
1359                 if ((handle)->free_data) { \
1360                         (handle)->free_data(&(handle)->data); \
1361                 } \
1362                 (handle)->data = (void *)datap; \
1363                 (handle)->free_data = free_fn; \
1364         } \
1365 }
1366
1367 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
1368         if ((handle) && (handle)->free_data) { \
1369                 (handle)->free_data(&(handle)->data); \
1370         } \
1371 }
1372
1373 /* Check whether module-specific data handle was already allocated or not */
1374 #define SMB_VFS_HANDLE_TEST_DATA(handle)  ( !(handle) || !(handle)->data ? False : True )
1375
1376 #define SMB_VFS_OP(x) ((void *) x)
1377
1378 #define DEFAULT_VFS_MODULE_NAME "/[Default VFS]/"
1379
1380 #include "vfs_macros.h"
1381
1382 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
1383                          const char *service, const char *user);
1384 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle);
1385 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
1386                                 const struct smb_filename *smb_filename,
1387                                 uint64_t *bsize,
1388                                 uint64_t *dfree,
1389                                 uint64_t *dsize);
1390 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
1391                                 const struct smb_filename *smb_filename,
1392                                 enum SMB_QUOTA_TYPE qtype,
1393                                 unid_t id,
1394                                 SMB_DISK_QUOTA *qt);
1395 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
1396                            enum SMB_QUOTA_TYPE qtype, unid_t id,
1397                            SMB_DISK_QUOTA *qt);
1398 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
1399                                       struct files_struct *fsp,
1400                                       struct shadow_copy_data *shadow_copy_data,
1401                                       bool labels);
1402 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle,
1403                         const struct smb_filename *smb_fname,
1404                         struct vfs_statvfs_struct *statbuf);
1405 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
1406                                       enum timestamp_set_resolution *p_ts_res);
1407 /*
1408  * Note: that "struct dfs_GetDFSReferral *r" needs to be a valid TALLOC_CTX
1409  */
1410 NTSTATUS smb_vfs_call_get_dfs_referrals(struct vfs_handle_struct *handle,
1411                                         struct dfs_GetDFSReferral *r);
1412 NTSTATUS smb_vfs_call_create_dfs_pathat(struct vfs_handle_struct *handle,
1413                                 struct files_struct *dirfsp,
1414                                 const struct smb_filename *smb_fname,
1415                                 const struct referral *reflist,
1416                                 size_t referral_count);
1417 NTSTATUS smb_vfs_call_read_dfs_pathat(struct vfs_handle_struct *handle,
1418                                 TALLOC_CTX *mem_ctx,
1419                                 struct files_struct *dirfsp,
1420                                 struct smb_filename *smb_fname,
1421                                 struct referral **ppreflist,
1422                                 size_t *preferral_count);
1423 DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
1424                                         struct files_struct *fsp,
1425                                         const char *mask,
1426                                         uint32_t attributes);
1427 struct dirent *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
1428                                     struct files_struct *dirfsp,
1429                                     DIR *dirp,
1430                                     SMB_STRUCT_STAT *sbuf);
1431 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
1432                           DIR *dirp, long offset);
1433 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
1434                           DIR *dirp);
1435 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
1436                              DIR *dirp);
1437 int smb_vfs_call_mkdirat(struct vfs_handle_struct *handle,
1438                         struct files_struct *dirfsp,
1439                         const struct smb_filename *smb_fname,
1440                         mode_t mode);
1441 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
1442                           DIR *dir);
1443 int smb_vfs_call_openat(struct vfs_handle_struct *handle,
1444                         const struct files_struct *dirfsp,
1445                         const struct smb_filename *smb_fname,
1446                         struct files_struct *fsp,
1447                         int flags,
1448                         mode_t mode);
1449 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
1450                                   struct smb_request *req,
1451                                   struct smb_filename *smb_fname,
1452                                   uint32_t access_mask,
1453                                   uint32_t share_access,
1454                                   uint32_t create_disposition,
1455                                   uint32_t create_options,
1456                                   uint32_t file_attributes,
1457                                   uint32_t oplock_request,
1458                                   const struct smb2_lease *lease,
1459                                   uint64_t allocation_size,
1460                                   uint32_t private_flags,
1461                                   struct security_descriptor *sd,
1462                                   struct ea_list *ea_list,
1463                                   files_struct **result,
1464                                   int *pinfo,
1465                                   const struct smb2_create_blobs *in_context_blobs,
1466                                   struct smb2_create_blobs *out_context_blobs);
1467 int smb_vfs_call_close(struct vfs_handle_struct *handle,
1468                        struct files_struct *fsp);
1469 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
1470                            struct files_struct *fsp, void *data, size_t n,
1471                            off_t offset);
1472 struct tevent_req *smb_vfs_call_pread_send(struct vfs_handle_struct *handle,
1473                                            TALLOC_CTX *mem_ctx,
1474                                            struct tevent_context *ev,
1475                                            struct files_struct *fsp,
1476                                            void *data,
1477                                            size_t n, off_t offset);
1478 ssize_t SMB_VFS_PREAD_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1479
1480 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
1481                             struct files_struct *fsp, const void *data,
1482                             size_t n, off_t offset);
1483 struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
1484                                             TALLOC_CTX *mem_ctx,
1485                                             struct tevent_context *ev,
1486                                             struct files_struct *fsp,
1487                                             const void *data,
1488                                             size_t n, off_t offset);
1489 ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1490
1491 off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
1492                              struct files_struct *fsp, off_t offset,
1493                              int whence);
1494 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
1495                               files_struct *fromfsp, const DATA_BLOB *header,
1496                               off_t offset, size_t count);
1497 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
1498                               files_struct *tofsp, off_t offset,
1499                               size_t count);
1500 int smb_vfs_call_renameat(struct vfs_handle_struct *handle,
1501                         struct files_struct *srcfsp,
1502                         const struct smb_filename *smb_fname_src,
1503                         struct files_struct *dstfsp,
1504                         const struct smb_filename *smb_fname_dst);
1505
1506 struct tevent_req *smb_vfs_call_fsync_send(struct vfs_handle_struct *handle,
1507                                            TALLOC_CTX *mem_ctx,
1508                                            struct tevent_context *ev,
1509                                            struct files_struct *fsp);
1510 int SMB_VFS_FSYNC_RECV(struct tevent_req *req, struct vfs_aio_state *state);
1511
1512 int smb_vfs_fsync_sync(files_struct *fsp);
1513 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
1514                       struct smb_filename *smb_fname);
1515 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
1516                        struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
1517 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
1518                        struct smb_filename *smb_filename);
1519 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
1520                                      struct files_struct *fsp,
1521                                      const SMB_STRUCT_STAT *sbuf);
1522 int smb_vfs_call_unlinkat(struct vfs_handle_struct *handle,
1523                         struct files_struct *dirfsp,
1524                         const struct smb_filename *smb_fname,
1525                         int flags);
1526 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
1527                         struct files_struct *fsp, mode_t mode);
1528 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
1529                         struct files_struct *fsp, uid_t uid, gid_t gid);
1530 int smb_vfs_call_lchown(struct vfs_handle_struct *handle,
1531                         const struct smb_filename *smb_fname,
1532                         uid_t uid,
1533                         gid_t gid);
1534 int smb_vfs_call_chdir(struct vfs_handle_struct *handle,
1535                         const struct smb_filename *smb_fname);
1536 struct smb_filename *smb_vfs_call_getwd(struct vfs_handle_struct *handle,
1537                                 TALLOC_CTX *ctx);
1538 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
1539                         const struct smb_filename *smb_fname,
1540                         struct smb_file_time *ft);
1541 int smb_vfs_call_fntimes(struct vfs_handle_struct *handle,
1542                          struct files_struct *fsp,
1543                          struct smb_file_time *ft);
1544 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
1545                            struct files_struct *fsp, off_t offset);
1546 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
1547                            struct files_struct *fsp,
1548                            uint32_t mode,
1549                            off_t offset,
1550                            off_t len);
1551 bool smb_vfs_call_lock(struct vfs_handle_struct *handle,
1552                        struct files_struct *fsp, int op, off_t offset,
1553                        off_t count, int type);
1554 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
1555                               struct files_struct *fsp, uint32_t share_access,
1556                               uint32_t access_mask);
1557 int smb_vfs_call_fcntl(struct vfs_handle_struct *handle,
1558                        struct files_struct *fsp, int cmd, ...);
1559 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
1560                                 struct files_struct *fsp, int leasetype);
1561 bool smb_vfs_call_getlock(struct vfs_handle_struct *handle,
1562                           struct files_struct *fsp, off_t *poffset,
1563                           off_t *pcount, int *ptype, pid_t *ppid);
1564 int smb_vfs_call_symlinkat(struct vfs_handle_struct *handle,
1565                         const struct smb_filename *link_contents,
1566                         struct files_struct *dirfsp,
1567                         const struct smb_filename *new_smb_fname);
1568 int smb_vfs_call_readlinkat(struct vfs_handle_struct *handle,
1569                         const struct files_struct *dirfsp,
1570                         const struct smb_filename *smb_fname,
1571                         char *buf,
1572                         size_t bufsiz);
1573 int smb_vfs_call_linkat(struct vfs_handle_struct *handle,
1574                         struct files_struct *srcfsp,
1575                         const struct smb_filename *old_smb_fname,
1576                         struct files_struct *dstfsp,
1577                         const struct smb_filename *new_smb_fname,
1578                         int flags);
1579 int smb_vfs_call_mknodat(struct vfs_handle_struct *handle,
1580                         struct files_struct *dirfsp,
1581                         const struct smb_filename *smb_fname,
1582                         mode_t mode,
1583                         SMB_DEV_T dev);
1584 struct smb_filename *smb_vfs_call_realpath(struct vfs_handle_struct *handle,
1585                         TALLOC_CTX *ctx,
1586                         const struct smb_filename *smb_fname);
1587 int smb_vfs_call_chflags(struct vfs_handle_struct *handle,
1588                         const struct smb_filename *smb_fname,
1589                         unsigned int flags);
1590 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
1591                                            const SMB_STRUCT_STAT *sbuf);
1592 uint64_t smb_vfs_call_fs_file_id(struct vfs_handle_struct *handle,
1593                                  const SMB_STRUCT_STAT *sbuf);
1594 NTSTATUS smb_vfs_call_fstreaminfo(struct vfs_handle_struct *handle,
1595                                   struct files_struct *fsp,
1596                                   TALLOC_CTX *mem_ctx,
1597                                   unsigned int *num_streams,
1598                                   struct stream_struct **streams);
1599 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
1600                                    const struct smb_filename *path,
1601                                    const char *name,
1602                                    TALLOC_CTX *mem_ctx,
1603                                    char **found_name);
1604 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
1605                                      const struct smb_filename *smb_fname);
1606 NTSTATUS smb_vfs_call_brl_lock_windows(struct vfs_handle_struct *handle,
1607                                        struct byte_range_lock *br_lck,
1608                                        struct lock_struct *plock);
1609 bool smb_vfs_call_brl_unlock_windows(struct vfs_handle_struct *handle,
1610                                      struct byte_range_lock *br_lck,
1611                                      const struct lock_struct *plock);
1612 bool smb_vfs_call_strict_lock_check(struct vfs_handle_struct *handle,
1613                                     struct files_struct *fsp,
1614                                     struct lock_struct *plock);
1615 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
1616                                      const char *name,
1617                                      enum vfs_translate_direction direction,
1618                                      TALLOC_CTX *mem_ctx,
1619                                      char **mapped_name);
1620 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
1621                             struct files_struct *fsp,
1622                             TALLOC_CTX *ctx,
1623                             uint32_t function,
1624                             uint16_t req_flags,
1625                             const uint8_t *_in_data,
1626                             uint32_t in_len,
1627                             uint8_t **_out_data,
1628                             uint32_t max_out_len,
1629                             uint32_t *out_len);
1630 NTSTATUS smb_vfs_call_fget_dos_attributes(struct vfs_handle_struct *handle,
1631                                           struct files_struct *fsp,
1632                                           uint32_t *dosmode);
1633 NTSTATUS smb_vfs_call_fset_dos_attributes(struct vfs_handle_struct *handle,
1634                                           struct files_struct *fsp,
1635                                           uint32_t dosmode);
1636 struct tevent_req *smb_vfs_call_get_dos_attributes_send(
1637                         TALLOC_CTX *mem_ctx,
1638                         struct tevent_context *ev,
1639                         struct vfs_handle_struct *handle,
1640                         files_struct *dir_fsp,
1641                         struct smb_filename *smb_fname);
1642 NTSTATUS smb_vfs_call_get_dos_attributes_recv(
1643                         struct tevent_req *req,
1644                         struct vfs_aio_state *aio_state,
1645                         uint32_t *dosmode);
1646 struct tevent_req *smb_vfs_call_offload_read_send(
1647         TALLOC_CTX *mem_ctx,
1648         struct tevent_context *ev,
1649         struct vfs_handle_struct *handle,
1650         struct files_struct *fsp,
1651         uint32_t fsctl,
1652         uint32_t ttl,
1653         off_t offset,
1654         size_t to_copy);
1655 NTSTATUS smb_vfs_call_offload_read_recv(struct tevent_req *req,
1656                                         struct vfs_handle_struct *handle,
1657                                         TALLOC_CTX *mem_ctx,
1658                                         DATA_BLOB *token_blob);
1659 struct tevent_req *smb_vfs_call_offload_write_send(struct vfs_handle_struct *handle,
1660                                                    TALLOC_CTX *mem_ctx,
1661                                                    struct tevent_context *ev,
1662                                                    uint32_t fsctl,
1663                                                    DATA_BLOB *token,
1664                                                    off_t transfer_offset,
1665                                                    struct files_struct *dest_fsp,
1666                                                    off_t dest_off,
1667                                                    off_t num);
1668 NTSTATUS smb_vfs_call_offload_write_recv(struct vfs_handle_struct *handle,
1669                                          struct tevent_req *req,
1670                                          off_t *copied);
1671 NTSTATUS smb_vfs_call_fget_compression(struct vfs_handle_struct *handle,
1672                                       TALLOC_CTX *mem_ctx,
1673                                       struct files_struct *fsp,
1674                                       uint16_t *_compression_fmt);
1675 NTSTATUS smb_vfs_call_set_compression(struct vfs_handle_struct *handle,
1676                                       TALLOC_CTX *mem_ctx,
1677                                       struct files_struct *fsp,
1678                                       uint16_t compression_fmt);
1679 NTSTATUS smb_vfs_call_snap_check_path(vfs_handle_struct *handle,
1680                                       TALLOC_CTX *mem_ctx,
1681                                       const char *service_path,
1682                                       char **base_volume);
1683 NTSTATUS smb_vfs_call_snap_create(struct vfs_handle_struct *handle,
1684                                   TALLOC_CTX *mem_ctx,
1685                                   const char *base_volume,
1686                                   time_t *tstamp,
1687                                   bool rw,
1688                                   char **base_path,
1689                                   char **snap_path);
1690 NTSTATUS smb_vfs_call_snap_delete(struct vfs_handle_struct *handle,
1691                                   TALLOC_CTX *mem_ctx,
1692                                   char *base_path,
1693                                   char *snap_path);
1694 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
1695                                   struct files_struct *fsp,
1696                                   uint32_t security_info,
1697                                   TALLOC_CTX *mem_ctx,
1698                                   struct security_descriptor **ppdesc);
1699 NTSTATUS smb_vfs_call_get_nt_acl_at(struct vfs_handle_struct *handle,
1700                                 struct files_struct *dirfsp,
1701                                 const struct smb_filename *smb_fname,
1702                                 uint32_t security_info,
1703                                 TALLOC_CTX *mem_ctx,
1704                                 struct security_descriptor **ppdesc);
1705 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
1706                                   struct files_struct *fsp,
1707                                   uint32_t security_info_sent,
1708                                   const struct security_descriptor *psd);
1709 NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
1710                                  struct smb_filename *file,
1711                                  struct security_acl *sacl,
1712                                  uint32_t access_requested,
1713                                  uint32_t access_denied);
1714 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle,
1715                                 const struct smb_filename *file,
1716                                 mode_t mode);
1717 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
1718                                         const struct smb_filename *smb_fname,
1719                                         SMB_ACL_TYPE_T type,
1720                                         TALLOC_CTX *mem_ctx);
1721 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
1722                                       struct files_struct *fsp,
1723                                       TALLOC_CTX *mem_ctx);
1724 int smb_vfs_call_sys_acl_blob_get_file(struct vfs_handle_struct *handle,
1725                                        const struct smb_filename *smb_fname,
1726                                        TALLOC_CTX *mem_ctx,
1727                                        char **blob_description,
1728                                        DATA_BLOB *blob);
1729 int smb_vfs_call_sys_acl_blob_get_fd(struct vfs_handle_struct *handle,
1730                                      struct files_struct *fsp,
1731                                      TALLOC_CTX *mem_ctx,
1732                                      char **blob_description,
1733                                      DATA_BLOB *blob);
1734 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
1735                                 struct files_struct *fsp,
1736                                 SMB_ACL_TYPE_T type,
1737                                 SMB_ACL_T theacl);
1738 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1739                                 const struct smb_filename *smb_fname);
1740 int smb_vfs_call_sys_acl_delete_def_fd(struct vfs_handle_struct *handle,
1741                                 struct files_struct *fsp);
1742 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
1743                                 const struct smb_filename *smb_fname,
1744                                 const char *name,
1745                                 void *value,
1746                                 size_t size);
1747 struct tevent_req *smb_vfs_call_getxattrat_send(
1748                         TALLOC_CTX *mem_ctx,
1749                         struct tevent_context *ev,
1750                         struct vfs_handle_struct *handle,
1751                         files_struct *dir_fsp,
1752                         const struct smb_filename *smb_fname,
1753                         const char *xattr_name,
1754                         size_t alloc_hint);
1755 ssize_t smb_vfs_call_getxattrat_recv(struct tevent_req *req,
1756                                      struct vfs_aio_state *aio_state,
1757                                      TALLOC_CTX *mem_ctx,
1758                                      uint8_t **xattr_value);
1759 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
1760                                struct files_struct *fsp, const char *name,
1761                                void *value, size_t size);
1762 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
1763                                 struct files_struct *fsp, char *list,
1764                                 size_t size);
1765 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
1766                               struct files_struct *fsp, const char *name);
1767 int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
1768                            const char *name, const void *value, size_t size,
1769                            int flags);
1770 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
1771                            struct files_struct *fsp, const char *name,
1772                            const void *value, size_t size, int flags);
1773 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
1774                             struct files_struct *fsp);
1775 NTSTATUS smb_vfs_call_durable_cookie(struct vfs_handle_struct *handle,
1776                                      struct files_struct *fsp,
1777                                      TALLOC_CTX *mem_ctx,
1778                                      DATA_BLOB *cookie);
1779 NTSTATUS smb_vfs_call_durable_disconnect(struct vfs_handle_struct *handle,
1780                                          struct files_struct *fsp,
1781                                          const DATA_BLOB old_cookie,
1782                                          TALLOC_CTX *mem_ctx,
1783                                          DATA_BLOB *new_cookie);
1784 NTSTATUS smb_vfs_call_durable_reconnect(struct vfs_handle_struct *handle,
1785                                         struct smb_request *smb1req,
1786                                         struct smbXsrv_open *op,
1787                                         const DATA_BLOB old_cookie,
1788                                         TALLOC_CTX *mem_ctx,
1789                                         struct files_struct **fsp,
1790                                         DATA_BLOB *new_cookie);
1791 NTSTATUS smb_vfs_call_freaddir_attr(struct vfs_handle_struct *handle,
1792                                     struct files_struct *fsp,
1793                                     TALLOC_CTX *mem_ctx,
1794                                     struct readdir_attr_data **attr_data);
1795
1796 NTSTATUS smb_register_vfs(int version, const char *name,
1797                           const struct vfs_fn_pointers *fns);
1798 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
1799                                    files_struct *fsp, size_t ext_size,
1800                                    void (*destroy_fn)(void *p_data));
1801 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1802 void vfs_remove_all_fsp_extensions(struct files_struct *fsp);
1803 void *vfs_memctx_fsp_extension(vfs_handle_struct *handle,
1804                                const struct files_struct *fsp);
1805 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, const struct files_struct *fsp);
1806
1807 void smb_vfs_assert_all_fns(const struct vfs_fn_pointers* fns,
1808                             const char *module);
1809
1810 /*
1811  * Helper functions from source3/modules/vfs_not_implemented.c
1812  */
1813 int vfs_not_implemented_connect(
1814                         vfs_handle_struct *handle,
1815                         const char *service,
1816                         const char *user);
1817 void vfs_not_implemented_disconnect(vfs_handle_struct *handle);
1818 uint64_t vfs_not_implemented_disk_free(vfs_handle_struct *handle,
1819                                 const struct smb_filename *smb_fname,
1820                                 uint64_t *bsize,
1821                                 uint64_t *dfree,
1822                                 uint64_t *dsize);
1823 int vfs_not_implemented_get_quota(vfs_handle_struct *handle,
1824                                 const struct smb_filename *smb_fname,
1825                                 enum SMB_QUOTA_TYPE qtype,
1826                                 unid_t id,
1827                                 SMB_DISK_QUOTA *dq);
1828 int vfs_not_implemented_set_quota(vfs_handle_struct *handle,
1829                                   enum SMB_QUOTA_TYPE qtype,
1830                                   unid_t id, SMB_DISK_QUOTA *dq);
1831 int vfs_not_implemented_get_shadow_copy_data(vfs_handle_struct *handle,
1832                                 files_struct *fsp,
1833                                 struct shadow_copy_data *shadow_copy_data,
1834                                 bool labels);
1835 int vfs_not_implemented_statvfs(struct vfs_handle_struct *handle,
1836                                 const struct smb_filename *smb_fname,
1837                                 struct vfs_statvfs_struct *statbuf);
1838 uint32_t vfs_not_implemented_fs_capabilities(struct vfs_handle_struct *handle,
1839                                 enum timestamp_set_resolution *p_ts_res);
1840 NTSTATUS vfs_not_implemented_get_dfs_referrals(struct vfs_handle_struct *handle,
1841                                                struct dfs_GetDFSReferral *r);
1842 NTSTATUS vfs_not_implemented_create_dfs_pathat(struct vfs_handle_struct *handle,
1843                                 struct files_struct *dirfsp,
1844                                 const struct smb_filename *smb_fname,
1845                                 const struct referral *reflist,
1846                                 size_t referral_count);
1847 NTSTATUS vfs_not_implemented_read_dfs_pathat(struct vfs_handle_struct *handle,
1848                                 TALLOC_CTX *mem_ctx,
1849                                 struct files_struct *dirfsp,
1850                                 struct smb_filename *smb_fname,
1851                                 struct referral **ppreflist,
1852                                 size_t *preferral_count);
1853 NTSTATUS vfs_not_implemented_snap_check_path(struct vfs_handle_struct *handle,
1854                                 TALLOC_CTX *mem_ctx,
1855                                 const char *service_path,
1856                                 char **base_volume);
1857 NTSTATUS vfs_not_implemented_snap_create(struct vfs_handle_struct *handle,
1858                                          TALLOC_CTX *mem_ctx,
1859                                          const char *base_volume,
1860                                          time_t *tstamp,
1861                                          bool rw,
1862                                          char **base_path,
1863                                          char **snap_path);
1864 NTSTATUS vfs_not_implemented_snap_delete(struct vfs_handle_struct *handle,
1865                                          TALLOC_CTX *mem_ctx,
1866                                          char *base_path,
1867                                          char *snap_path);
1868 DIR *vfs_not_implemented_fdopendir(vfs_handle_struct *handle, files_struct *fsp,
1869                                    const char *mask, uint32_t attr);
1870 struct dirent *vfs_not_implemented_readdir(vfs_handle_struct *handle,
1871                                            struct files_struct *dirfsp,
1872                                            DIR *dirp,
1873                                            SMB_STRUCT_STAT *sbuf);
1874 void vfs_not_implemented_seekdir(vfs_handle_struct *handle, DIR *dirp, long offset);
1875 long vfs_not_implemented_telldir(vfs_handle_struct *handle, DIR *dirp);
1876 void vfs_not_implemented_rewind_dir(vfs_handle_struct *handle, DIR *dirp);
1877 int vfs_not_implemented_mkdirat(vfs_handle_struct *handle,
1878                 struct files_struct *dirfsp,
1879                 const struct smb_filename *smb_fname,
1880                 mode_t mode);
1881 int vfs_not_implemented_closedir(vfs_handle_struct *handle, DIR *dir);
1882 int vfs_not_implemented_open(vfs_handle_struct *handle,
1883                              struct smb_filename *smb_fname,
1884                              files_struct *fsp, int flags, mode_t mode);
1885 int vfs_not_implemented_openat(vfs_handle_struct *handle,
1886                                const struct files_struct *dirfsp,
1887                                const struct smb_filename *smb_fname,
1888                                struct files_struct *fsp,
1889                                int flags,
1890                                mode_t mode);
1891 NTSTATUS vfs_not_implemented_create_file(struct vfs_handle_struct *handle,
1892                                 struct smb_request *req,
1893                                 struct smb_filename *smb_fname,
1894                                 uint32_t access_mask,
1895                                 uint32_t share_access,
1896                                 uint32_t create_disposition,
1897                                 uint32_t create_options,
1898                                 uint32_t file_attributes,
1899                                 uint32_t oplock_request,
1900                                 const struct smb2_lease *lease,
1901                                 uint64_t allocation_size,
1902                                 uint32_t private_flags,
1903                                 struct security_descriptor *sd,
1904                                 struct ea_list *ea_list,
1905                                 files_struct **result, int *pinfo,
1906                                 const struct smb2_create_blobs *in_context_blobs,
1907                                 struct smb2_create_blobs *out_context_blobs);
1908 int vfs_not_implemented_close_fn(vfs_handle_struct *handle, files_struct *fsp);
1909 ssize_t vfs_not_implemented_pread(vfs_handle_struct *handle, files_struct *fsp,
1910                                   void *data, size_t n, off_t offset);
1911 struct tevent_req *vfs_not_implemented_pread_send(struct vfs_handle_struct *handle,
1912                                                   TALLOC_CTX *mem_ctx,
1913                                                   struct tevent_context *ev,
1914                                                   struct files_struct *fsp,
1915                                                   void *data, size_t n, off_t offset);
1916 ssize_t vfs_not_implemented_pread_recv(struct tevent_req *req,
1917                                        struct vfs_aio_state *vfs_aio_state);
1918 ssize_t vfs_not_implemented_pwrite(vfs_handle_struct *handle, files_struct *fsp,
1919                                    const void *data, size_t n, off_t offset);
1920 struct tevent_req *vfs_not_implemented_pwrite_send(struct vfs_handle_struct *handle,
1921                                                    TALLOC_CTX *mem_ctx,
1922                                                    struct tevent_context *ev,
1923                                                    struct files_struct *fsp,
1924                                                    const void *data,
1925                                                    size_t n, off_t offset);
1926 ssize_t vfs_not_implemented_pwrite_recv(struct tevent_req *req,
1927                                 struct vfs_aio_state *vfs_aio_state);
1928 off_t vfs_not_implemented_lseek(vfs_handle_struct *handle, files_struct *fsp,
1929                         off_t offset, int whence);
1930 ssize_t vfs_not_implemented_sendfile(vfs_handle_struct *handle, int tofd,
1931                                      files_struct *fromfsp, const DATA_BLOB *hdr,
1932                                      off_t offset, size_t n);
1933 ssize_t vfs_not_implemented_recvfile(vfs_handle_struct *handle, int fromfd,
1934                                      files_struct *tofsp, off_t offset, size_t n);
1935 int vfs_not_implemented_renameat(vfs_handle_struct *handle,
1936                                files_struct *srcfsp,
1937                                const struct smb_filename *smb_fname_src,
1938                                files_struct *dstfsp,
1939                                const struct smb_filename *smb_fname_dst);
1940 struct tevent_req *vfs_not_implemented_fsync_send(struct vfs_handle_struct *handle,
1941                                                   TALLOC_CTX *mem_ctx,
1942                                                   struct tevent_context *ev,
1943                                                   struct files_struct *fsp);
1944 int vfs_not_implemented_fsync_recv(struct tevent_req *req,
1945                                    struct vfs_aio_state *vfs_aio_state);
1946 int vfs_not_implemented_stat(vfs_handle_struct *handle, struct smb_filename *smb_fname);
1947 int vfs_not_implemented_fstat(vfs_handle_struct *handle, files_struct *fsp,
1948                         SMB_STRUCT_STAT *sbuf);
1949 int vfs_not_implemented_lstat(vfs_handle_struct *handle,
1950                               struct smb_filename *smb_fname);
1951 uint64_t vfs_not_implemented_get_alloc_size(struct vfs_handle_struct *handle,
1952                                             struct files_struct *fsp,
1953                                             const SMB_STRUCT_STAT *sbuf);
1954 int vfs_not_implemented_unlinkat(vfs_handle_struct *handle,
1955                                 struct files_struct *dirfsp,
1956                                 const struct smb_filename *smb_fname,
1957                                 int flags);
1958 int vfs_not_implemented_fchmod(vfs_handle_struct *handle, files_struct *fsp,
1959                                mode_t mode);
1960 int vfs_not_implemented_fchown(vfs_handle_struct *handle, files_struct *fsp,
1961                                uid_t uid, gid_t gid);
1962 int vfs_not_implemented_lchown(vfs_handle_struct *handle,
1963                                const struct smb_filename *smb_fname,
1964                                uid_t uid,
1965                                gid_t gid);
1966 int vfs_not_implemented_chdir(vfs_handle_struct *handle,
1967                               const struct smb_filename *smb_fname);
1968 struct smb_filename *vfs_not_implemented_getwd(vfs_handle_struct *handle,
1969                                                TALLOC_CTX *ctx);
1970 int vfs_not_implemented_ntimes(vfs_handle_struct *handle,
1971                                const struct smb_filename *smb_fname,
1972                                struct smb_file_time *ft);
1973 int vfs_not_implemented_fntimes(vfs_handle_struct *handle,
1974                                 files_struct *fsp,
1975                                 struct smb_file_time *ft);
1976 int vfs_not_implemented_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
1977                                   off_t offset);
1978 int vfs_not_implemented_fallocate(vfs_handle_struct *handle, files_struct *fsp,
1979                                   uint32_t mode, off_t offset, off_t len);
1980 bool vfs_not_implemented_lock(vfs_handle_struct *handle, files_struct *fsp, int op,
1981                               off_t offset, off_t count, int type);
1982 int vfs_not_implemented_kernel_flock(struct vfs_handle_struct *handle,
1983                                      struct files_struct *fsp,
1984                                      uint32_t share_access, uint32_t access_mask);
1985 int vfs_not_implemented_fcntl(struct vfs_handle_struct *handle,
1986                               struct files_struct *fsp, int cmd, va_list cmd_arg);
1987 int vfs_not_implemented_linux_setlease(struct vfs_handle_struct *handle,
1988                                        struct files_struct *fsp, int leasetype);
1989 bool vfs_not_implemented_getlock(vfs_handle_struct *handle, files_struct *fsp,
1990                                  off_t *poffset, off_t *pcount, int *ptype,
1991                                  pid_t *ppid);
1992 int vfs_not_implemented_symlinkat(vfs_handle_struct *handle,
1993                                 const struct smb_filename *link_contents,
1994                                 struct files_struct *dirfsp,
1995                                 const struct smb_filename *new_smb_fname);
1996 int vfs_not_implemented_vfs_readlinkat(vfs_handle_struct *handle,
1997                         const struct files_struct *dirfsp,
1998                         const struct smb_filename *smb_fname,
1999                         char *buf,
2000                         size_t bufsiz);
2001 int vfs_not_implemented_linkat(vfs_handle_struct *handle,
2002                         struct files_struct *srcfsp,
2003                         const struct smb_filename *old_smb_fname,
2004                         struct files_struct *dstfsp,
2005                         const struct smb_filename *new_smb_fname,
2006                         int flags);
2007 int vfs_not_implemented_mknodat(vfs_handle_struct *handle,
2008                         struct files_struct *dirfsp,
2009                         const struct smb_filename *smb_fname,
2010                         mode_t mode,
2011                         SMB_DEV_T dev);
2012 struct smb_filename *vfs_not_implemented_realpath(vfs_handle_struct *handle,
2013                                                   TALLOC_CTX *ctx,
2014                                                   const struct smb_filename *smb_fname);
2015 int vfs_not_implemented_chflags(vfs_handle_struct *handle,
2016                                 const struct smb_filename *smb_fname,
2017                                 uint flags);
2018 struct file_id vfs_not_implemented_file_id_create(vfs_handle_struct *handle,
2019                                                   const SMB_STRUCT_STAT *sbuf);
2020 uint64_t vfs_not_implemented_fs_file_id(vfs_handle_struct *handle,
2021                                         const SMB_STRUCT_STAT *sbuf);
2022 struct tevent_req *vfs_not_implemented_offload_read_send(
2023                         TALLOC_CTX *mem_ctx,
2024                         struct tevent_context *ev,
2025                         struct vfs_handle_struct *handle,
2026                         struct files_struct *fsp,
2027                         uint32_t fsctl,
2028                         uint32_t ttl,
2029                         off_t offset,
2030                         size_t to_copy);
2031 NTSTATUS vfs_not_implemented_offload_read_recv(struct tevent_req *req,
2032                                        struct vfs_handle_struct *handle,
2033                                        TALLOC_CTX *mem_ctx,
2034                                        DATA_BLOB *_token_blob);
2035 struct tevent_req *vfs_not_implemented_offload_write_send(
2036                         struct vfs_handle_struct *handle,
2037                         TALLOC_CTX *mem_ctx,
2038                         struct tevent_context *ev,
2039                         uint32_t fsctl,
2040                         DATA_BLOB *token,
2041                         off_t transfer_offset,
2042                         struct files_struct *dest_fsp,
2043                         off_t dest_off,
2044                         off_t num);
2045 NTSTATUS vfs_not_implemented_offload_write_recv(struct vfs_handle_struct *handle,
2046                                                 struct tevent_req *req,
2047                                                 off_t *copied);
2048 NTSTATUS vfs_not_implemented_fget_compression(struct vfs_handle_struct *handle,
2049                                              TALLOC_CTX *mem_ctx,
2050                                              struct files_struct *fsp,
2051                                              uint16_t *_compression_fmt);
2052 NTSTATUS vfs_not_implemented_set_compression(struct vfs_handle_struct *handle,
2053                                              TALLOC_CTX *mem_ctx,
2054                                              struct files_struct *fsp,
2055                                              uint16_t compression_fmt);
2056 NTSTATUS vfs_not_implemented_fstreaminfo(struct vfs_handle_struct *handle,
2057                                          struct files_struct *fsp,
2058                                          TALLOC_CTX *mem_ctx,
2059                                          unsigned int *num_streams,
2060                                          struct stream_struct **streams);
2061 int vfs_not_implemented_get_real_filename(struct vfs_handle_struct *handle,
2062                                           const struct smb_filename *path,
2063                                           const char *name,
2064                                           TALLOC_CTX *mem_ctx,
2065                                           char **found_name);
2066 const char *vfs_not_implemented_connectpath(struct vfs_handle_struct *handle,
2067                                             const struct smb_filename *smb_fname);
2068 NTSTATUS vfs_not_implemented_brl_lock_windows(struct vfs_handle_struct *handle,
2069                                               struct byte_range_lock *br_lck,
2070                                               struct lock_struct *plock);
2071 bool vfs_not_implemented_brl_unlock_windows(struct vfs_handle_struct *handle,
2072                                             struct byte_range_lock *br_lck,
2073                                             const struct lock_struct *plock);
2074 bool vfs_not_implemented_strict_lock_check(struct vfs_handle_struct *handle,
2075                                            struct files_struct *fsp,
2076                                            struct lock_struct *plock);
2077 NTSTATUS vfs_not_implemented_translate_name(struct vfs_handle_struct *handle,
2078                                             const char *mapped_name,
2079                                             enum vfs_translate_direction direction,
2080                                             TALLOC_CTX *mem_ctx, char **pmapped_name);
2081 NTSTATUS vfs_not_implemented_fsctl(struct vfs_handle_struct *handle,
2082                                    struct files_struct *fsp,
2083                                    TALLOC_CTX *ctx,
2084                                    uint32_t function,
2085                                    uint16_t req_flags,  /* Needed for UNICODE ... */
2086                                    const uint8_t *_in_data,
2087                                    uint32_t in_len,
2088                                    uint8_t **_out_data,
2089                                    uint32_t max_out_len, uint32_t *out_len);
2090 NTSTATUS vfs_not_implemented_freaddir_attr(struct vfs_handle_struct *handle,
2091                                            struct files_struct *dirfsp,
2092                                            TALLOC_CTX *mem_ctx,
2093                                            struct readdir_attr_data **pattr_data);
2094 struct tevent_req *vfs_not_implemented_get_dos_attributes_send(
2095                         TALLOC_CTX *mem_ctx,
2096                         struct tevent_context *ev,
2097                         struct vfs_handle_struct *handle,
2098                         files_struct *dir_fsp,
2099                         struct smb_filename *smb_fname);
2100 NTSTATUS vfs_not_implemented_get_dos_attributes_recv(
2101                         struct tevent_req *req,
2102                         struct vfs_aio_state *aio_state,
2103                         uint32_t *dosmode);
2104 NTSTATUS vfs_not_implemented_fget_dos_attributes(struct vfs_handle_struct *handle,
2105                                                  struct files_struct *fsp,
2106                                                  uint32_t *dosmode);
2107 NTSTATUS vfs_not_implemented_set_dos_attributes(struct vfs_handle_struct *handle,
2108                                                 const struct smb_filename *smb_fname,
2109                                                 uint32_t dosmode);
2110 NTSTATUS vfs_not_implemented_fset_dos_attributes(struct vfs_handle_struct *handle,
2111                                                  struct files_struct *fsp,
2112                                                  uint32_t dosmode);
2113 NTSTATUS vfs_not_implemented_fget_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
2114                                          uint32_t security_info,
2115                                          TALLOC_CTX *mem_ctx,
2116                                          struct security_descriptor **ppdesc);
2117 NTSTATUS vfs_not_implemented_get_nt_acl_at(vfs_handle_struct *handle,
2118                         struct files_struct *dirfsp,
2119                         const struct smb_filename *smb_fname,
2120                         uint32_t security_info,
2121                         TALLOC_CTX *mem_ctx,
2122                         struct security_descriptor **ppdesc);
2123 NTSTATUS vfs_not_implemented_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
2124                                          uint32_t security_info_sent,
2125                                          const struct security_descriptor *psd);
2126 SMB_ACL_T vfs_not_implemented_sys_acl_get_file(vfs_handle_struct *handle,
2127                                                const struct smb_filename *smb_fname,
2128                                                SMB_ACL_TYPE_T type,
2129                                                TALLOC_CTX *mem_ctx);
2130 SMB_ACL_T vfs_not_implemented_sys_acl_get_fd(vfs_handle_struct *handle,
2131                                              files_struct *fsp, TALLOC_CTX *mem_ctx);
2132 int vfs_not_implemented_sys_acl_blob_get_file(vfs_handle_struct *handle,
2133                                 const struct smb_filename *smb_fname,
2134                                 TALLOC_CTX *mem_ctx,
2135                                 char **blob_description,
2136                                 DATA_BLOB *blob);
2137 int vfs_not_implemented_sys_acl_blob_get_fd(vfs_handle_struct *handle,
2138                                 files_struct *fsp, TALLOC_CTX *mem_ctx,
2139                                 char **blob_description, DATA_BLOB *blob);
2140 int vfs_not_implemented_sys_acl_set_fd(vfs_handle_struct *handle,
2141                                        struct files_struct *fsp,
2142                                        SMB_ACL_TYPE_T type,
2143                                        SMB_ACL_T theacl);
2144 int vfs_not_implemented_sys_acl_delete_def_file(vfs_handle_struct *handle,
2145                                         const struct smb_filename *smb_fname);
2146 int vfs_not_implemented_sys_acl_delete_def_fd(vfs_handle_struct *handle,
2147                                         files_struct *fsp);
2148 ssize_t vfs_not_implemented_getxattr(vfs_handle_struct *handle,
2149                                 const struct smb_filename *smb_fname,
2150                                 const char *name,
2151                                 void *value,
2152                                 size_t size);
2153 struct tevent_req *vfs_not_implemented_getxattrat_send(
2154                         TALLOC_CTX *mem_ctx,
2155                         struct tevent_context *ev,
2156                         struct vfs_handle_struct *handle,
2157                         files_struct *dir_fsp,
2158                         const struct smb_filename *smb_fname,
2159                         const char *xattr_name,
2160                         size_t alloc_hint);
2161 ssize_t vfs_not_implemented_getxattrat_recv(struct tevent_req *req,
2162                                     struct vfs_aio_state *aio_state,
2163                                     TALLOC_CTX *mem_ctx,
2164                                     uint8_t **xattr_value);
2165 ssize_t vfs_not_implemented_fgetxattr(vfs_handle_struct *handle,
2166                               struct files_struct *fsp, const char *name,
2167                               void *value, size_t size);
2168 ssize_t vfs_not_implemented_listxattr(vfs_handle_struct *handle,
2169                                       const struct smb_filename *smb_fname,
2170                                       char *list,
2171                                       size_t size);
2172 ssize_t vfs_not_implemented_flistxattr(vfs_handle_struct *handle,
2173                                        struct files_struct *fsp, char *list,
2174                                        size_t size);
2175 int vfs_not_implemented_fremovexattr(vfs_handle_struct *handle,
2176                                      struct files_struct *fsp, const char *name);
2177 int vfs_not_implemented_setxattr(vfs_handle_struct *handle,
2178                                  const struct smb_filename *smb_fname,
2179                                  const char *name,
2180                                  const void *value,
2181                                  size_t size,
2182                                  int flags);
2183 int vfs_not_implemented_fsetxattr(vfs_handle_struct *handle, struct files_struct *fsp,
2184                                   const char *name, const void *value, size_t size,
2185                                   int flags);
2186 bool vfs_not_implemented_aio_force(struct vfs_handle_struct *handle,
2187                                    struct files_struct *fsp);
2188 NTSTATUS vfs_not_implemented_audit_file(struct vfs_handle_struct *handle,
2189                                         struct smb_filename *file,
2190                                         struct security_acl *sacl,
2191                                         uint32_t access_requested,
2192                                         uint32_t access_denied);
2193 NTSTATUS vfs_not_implemented_durable_cookie(struct vfs_handle_struct *handle,
2194                                             struct files_struct *fsp,
2195                                             TALLOC_CTX *mem_ctx,
2196                                             DATA_BLOB *cookie);
2197 NTSTATUS vfs_not_implemented_durable_disconnect(struct vfs_handle_struct *handle,
2198                                                 struct files_struct *fsp,
2199                                                 const DATA_BLOB old_cookie,
2200                                                 TALLOC_CTX *mem_ctx,
2201                                                 DATA_BLOB *new_cookie);
2202 NTSTATUS vfs_not_implemented_durable_reconnect(struct vfs_handle_struct *handle,
2203                                                struct smb_request *smb1req,
2204                                                struct smbXsrv_open *op,
2205                                                const DATA_BLOB old_cookie,
2206                                                TALLOC_CTX *mem_ctx,
2207                                                struct files_struct **fsp,
2208                                                DATA_BLOB *new_cookie);
2209 #endif /* _VFS_H */