source3/include/vfs.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3    VFS structures and parameters
   4    Copyright (C) Jeremy Allison                         1999-2005
   5    Copyright (C) Tim Potter                             1999
   6    Copyright (C) Alexander Bokovoy                      2002-2005
   7    Copyright (C) Stefan (metze) Metzmacher              2003
   8    Copyright (C) Volker Lendecke                        2009
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22
  23    This work was sponsored by Optifacio Software Services, Inc.
  24 */
  25
  26 #ifndef _VFS_H
  27 #define _VFS_H
  28
  29 /* Avoid conflict with an AIX include file */
  30
  31 #ifdef vfs_ops
  32 #undef vfs_ops
  33 #endif
  34
  35 /*
  36  * As we're now (thanks Andrew ! :-) using file_structs and connection
  37  * structs in the vfs - then anyone writing a vfs must include includes.h...
  38  */
  39
  40 /*
  41  * This next constant specifies the version number of the VFS interface
  42  * this smbd will load. Increment this if *ANY* changes are made to the
  43  * vfs_ops below. JRA.
  44  *
  45  * If you change anything here, please also update modules/vfs_full_audit.c.
  46  * VL.
  47  */
  48
  49 /* Changed to version 2 for CIFS UNIX extensions (mknod and link added). JRA. */
  50 /* Changed to version 3 for POSIX acl extensions. JRA. */
  51 /* Changed to version 4 for cascaded VFS interface. Alexander Bokovoy. */
  52 /* Changed to version 5 for sendfile addition. JRA. */
  53 /* Changed to version 6 for the new module system, fixed cascading and quota functions. --metze */
  54 /* Changed to version 7 to include the get_nt_acl info parameter. JRA. */
  55 /* Changed to version 8 includes EA calls. JRA. */
  56 /* Changed to version 9 to include the get_shadow_data call. --metze */
  57 /* Changed to version 10 to include pread/pwrite calls. */
  58 /* Changed to version 11 to include seekdir/telldir/rewinddir calls. JRA */
  59 /* Changed to version 12 to add mask and attributes to opendir(). JRA
  60    Also include aio calls. JRA. */
  61 /* Changed to version 13 as the internal structure of files_struct has changed. JRA */
  62 /* Changed to version 14 as we had to change DIR to SMB_STRUCT_DIR. JRA */
  63 /* Changed to version 15 as we added the statvfs call. JRA */
  64 /* Changed to version 16 as we added the getlock call. JRA */
  65 /* Changed to version 17 as we removed redundant connection_struct parameters. --jpeach */
  66 /* Changed to version 18 to add fsp parameter to the open call -- jpeach
  67    Also include kernel_flock call - jmcd */
  68 /* Changed to version 19, kernel change notify has been merged
  69    Also included linux setlease call - jmcd */
  70 /* Changed to version 20, use ntimes call instead of utime (greater
  71  * timestamp resolition. JRA. */
  72 /* Changed to version21 to add chflags operation -- jpeach */
  73 /* Changed to version22 to add lchown operation -- jra */
  74 /* Leave at 22 - not yet released. But change set_nt_acl to return an NTSTATUS. jra. */
  75 /* Leave at 22 - not yet released. Add file_id_create operation. --metze */
  76 /* Leave at 22 - not yet released. Change all BOOL parameters (int) to bool. jra. */
  77 /* Leave at 22 - not yet released. Added recvfile. */
  78 /* Leave at 22 - not yet released. Change get_nt_acl to return NTSTATUS - vl */
  79 /* Leave at 22 - not yet released. Change get_nt_acl to *not* take a
  80  * files_struct. - obnox.*/
  81 /* Leave at 22 - not yet released. Remove parameter fd from fget_nt_acl. - obnox */
  82 /* Leave at 22 - not yet released. Remove parameter fd from gset_nt_acl. - obnox */
  83 /* Leave at 22 - not yet released. Remove parameter fd from pread. - obnox */
  84 /* Leave at 22 - not yet released. Remove parameter fd from pwrite. - obnox */
  85 /* Leave at 22 - not yet released. Remove parameter fd from lseek. - obnox */
  86 /* Leave at 22 - not yet released. Remove parameter fd from fsync. - obnox */
  87 /* Leave at 22 - not yet released. Remove parameter fd from fstat. - obnox */
  88 /* Leave at 22 - not yet released. Remove parameter fd from fchmod. - obnox */
  89 /* Leave at 22 - not yet released. Remove parameter fd from fchown. - obnox */
  90 /* Leave at 22 - not yet released. Remove parameter fd from ftruncate. - obnox */
  91 /* Leave at 22 - not yet released. Remove parameter fd from lock. - obnox */
  92 /* Leave at 22 - not yet released. Remove parameter fd from kernel_flock. - obnox */
  93 /* Leave at 22 - not yet released. Remove parameter fd from linux_setlease. - obnox */
  94 /* Leave at 22 - not yet released. Remove parameter fd from getlock. - obnox */
  95 /* Leave at 22 - not yet released. Remove parameter fd from sys_acl_get_fd. - obnox */
  96 /* Leave at 22 - not yet released. Remove parameter fd from fchmod_acl. - obnox */
  97 /* Leave at 22 - not yet released. Remove parameter fd from sys_acl_set_fd. - obnox */
  98 /* Leave at 22 - not yet released. Remove parameter fd from fgetxattr. - obnox */
  99 /* Leave at 22 - not yet released. Remove parameter fd from flistxattr. - obnox */
 100 /* Leave at 22 - not yet released. Remove parameter fd from fremovexattr. - obnox */
 101 /* Leave at 22 - not yet released. Remove parameter fd from fsetxattr. - obnox */
 102 /* Leave at 22 - not yet released. Remove parameter fd from aio_cancel. - obnox */
 103 /* Leave at 22 - not yet released. Remove parameter fd from read. - obnox */
 104 /* Leave at 22 - not yet released. Remove parameter fd from write. - obnox */
 105 /* Leave at 22 - not yet released. Remove parameter fromfd from sendfile. - obnox */
 106 /* Leave at 22 - not yet released. Remove parameter fromfd from recvfile. - obnox */
 107 /* Leave at 22 - not yet released. Additional change: add operations for offline files -- ab */
 108 /* Leave at 22 - not yet released. Add the streaminfo call. -- jpeach, vl */
 109 /* Leave at 22 - not yet released. Remove parameter fd from close_fn. - obnox */
 110 /* Changed to version 23 - remove set_nt_acl call. This can only be done via an
 111    open handle. JRA. */
 112 /* Changed to version 24 - make security descriptor const in fset_nt_acl. JRA. */
 113 /* Changed to version 25 - Jelmer's change from SMB_BIG_UINT to uint64_t. */
 114 /* Leave at 25 - not yet released. Add create_file call. -- tprouty. */
 115 /* Leave at 25 - not yet released. Add create time to ntimes. -- tstecher. */
 116 /* Leave at 25 - not yet released. Add get_alloc_size call. -- tprouty. */
 117 /* Leave at 25 - not yet released. Add SMB_STRUCT_STAT to readdir. - sdann */
 118 /* Leave at 25 - not yet released. Add init_search_op call. - sdann */
 119 /* Leave at 25 - not yet released. Add locking calls. -- zkirsch. */
 120 /* Leave at 25 - not yet released. Add strict locking calls. -- drichards. */
 121 /* Changed to version 26 - Plumb struct smb_filename to SMB_VFS_CREATE_FILE,
 122                            SMB_VFS_OPEN, SMB_VFS_STAT, SMB_VFS_LSTAT,
 123                            SMB_VFS_RENAME, SMB_VFS_UNLINK, SMB_VFS_NTIMES.  */
 124 /* Changed to version 27 - not yet released. Added enum timestamp_set_resolution
 125  *                         return to fs_capabilities call. JRA. */
 126 /* Leave at 27 - not yet released. Add translate_name VFS call to convert
 127                  UNIX names to Windows supported names -- asrinivasan. */
 128 /* Changed to version 28 - Add private_flags uint32_t to CREATE call. */
 129 /* Leave at 28 - not yet released. Change realpath to assume NULL and return a
 130                  malloc'ed path. JRA. */
 131 /* Leave at 28 - not yet released. Move posix_fallocate into the VFS
 132                 where it belongs. JRA. */
 133 /* Leave at 28 - not yet released. Rename posix_fallocate to fallocate
 134                 to split out the two possible uses. JRA. */
 135 /* Leave at 28 - not yet released. Add fdopendir. JRA. */
 136 /* Leave at 28 - not yet released. Rename open function to open_fn. - gd */
 137 /* Leave at 28 - not yet released. Make getwd function always return malloced memory. JRA. */
 138 /* Bump to version 29 - Samba 3.6.0 will ship with interface version 28. */
 139 /* Leave at 29 - not yet releases. Add fsctl. Richard Sharpe */
 140 /* Leave at 29 - not yet released. add SMB_VFS_GET_DFS_REFERRAL() - metze */
 141 /* Leave at 29 - not yet released. Remove l{list,get,set,remove}xattr - abartlet */
 142 /* Leave at 29 - not yet released. move to plain off_t - abartlet */
 143 #define SMB_VFS_INTERFACE_VERSION 29
 144
 145 /*
 146     All intercepted VFS operations must be declared as static functions inside module source
 147     in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
 148     example VFS modules for more details.
 149 */
 150
 151 /* VFS operations structure */
 152
 153 struct vfs_handle_struct;
 154 struct connection_struct;
 155 struct files_struct;
 156 struct security_descriptor;
 157 struct vfs_statvfs_struct;
 158 struct smb_request;
 159 struct ea_list;
 160 struct smb_file_time;
 161 struct blocking_lock_record;
 162 struct smb_filename;
 163 struct dfs_GetDFSReferral;
 164
 165 typedef union unid_t {
 166         uid_t uid;
 167         gid_t gid;
 168 } unid_t;
 169
 170 struct fd_handle {
 171         size_t ref_count;
 172         int fd;
 173         uint64_t position_information;
 174         off_t pos;
 175         uint32 private_options; /* NT Create options, but we only look at
 176                                  * NTCREATEX_OPTIONS_PRIVATE_DENY_DOS and
 177                                  * NTCREATEX_OPTIONS_PRIVATE_DENY_FCB and
 178                                  * NTCREATEX_OPTIONS_PRIVATE_DELETE_ON_CLOSE
 179                                  * for print files *only*, where
 180                                  * DELETE_ON_CLOSE is not stored in the share
 181                                  * mode database.
 182                                  */
 183         unsigned long gen_id;
 184 };
 185
 186 typedef struct files_struct {
 187         struct files_struct *next, *prev;
 188         int fnum;
 189         struct connection_struct *conn;
 190         struct fd_handle *fh;
 191         unsigned int num_smb_operations;
 192         struct file_id file_id;
 193         uint64_t initial_allocation_size; /* Faked up initial allocation on disk. */
 194         uint16 file_pid;
 195         uint64_t vuid; /* SMB2 compat */
 196         struct write_cache *wcp;
 197         struct timeval open_time;
 198         uint32 access_mask;             /* NTCreateX access bits (FILE_READ_DATA etc.) */
 199         uint32 share_access;            /* NTCreateX share constants (FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE). */
 200
 201         bool update_write_time_triggered;
 202         struct timed_event *update_write_time_event;
 203         bool update_write_time_on_close;
 204         struct timespec close_write_time;
 205         bool write_time_forced;
 206
 207         int oplock_type;
 208         int sent_oplock_break;
 209         struct timed_event *oplock_timeout;
 210         struct lock_struct last_lock_failure;
 211         int current_lock_count; /* Count the number of outstanding locks and pending locks. */
 212
 213         struct share_mode_entry *pending_break_messages;
 214         int num_pending_break_messages;
 215
 216         bool can_lock;
 217         bool can_read;
 218         bool can_write;
 219         bool modified;
 220         bool is_directory;
 221         bool aio_write_behind;
 222         bool lockdb_clean;
 223         bool initial_delete_on_close; /* Only set at NTCreateX if file was created. */
 224         bool delete_on_close;
 225         bool posix_open;
 226         bool is_sparse;
 227         struct smb_filename *fsp_name;
 228         uint32_t name_hash;             /* Jenkins hash of full pathname. */
 229
 230         struct vfs_fsp_data *vfs_extension;
 231         struct fake_file_handle *fake_file_handle;
 232
 233         struct notify_change_buf *notify;
 234
 235         struct files_struct *base_fsp; /* placeholder for delete on close */
 236
 237         /*
 238          * Read-only cached brlock record, thrown away when the
 239          * brlock.tdb seqnum changes. This avoids fetching data from
 240          * the brlock.tdb on every read/write call.
 241          */
 242         int brlock_seqnum;
 243         struct byte_range_lock *brlock_rec;
 244
 245         struct dptr_struct *dptr;
 246
 247         /* if not NULL, means this is a print file */
 248         struct print_file_data *print_file;
 249
 250 } files_struct;
 251
 252 struct vuid_cache_entry {
 253         struct auth_session_info *session_info;
 254         uint64_t vuid; /* SMB2 compat */
 255         bool read_only;
 256 };
 257
 258 struct vuid_cache {
 259         unsigned int next_entry;
 260         struct vuid_cache_entry array[VUID_CACHE_SIZE];
 261 };
 262
 263 typedef struct {
 264         char *name;
 265         bool is_wild;
 266 } name_compare_entry;
 267
 268 struct dfree_cached_info {
 269         time_t last_dfree_time;
 270         uint64_t dfree_ret;
 271         uint64_t bsize;
 272         uint64_t dfree;
 273         uint64_t dsize;
 274 };
 275
 276 struct share_params {
 277         int service;
 278 };
 279
 280 typedef struct connection_struct {
 281         struct connection_struct *next, *prev;
 282         struct smbd_server_connection *sconn; /* can be NULL */
 283         uint32_t cnum; /* an index passed over the wire */
 284         struct share_params *params;
 285         bool force_user;
 286         struct vuid_cache vuid_cache;
 287         bool printer;
 288         bool ipc;
 289         bool read_only; /* Attributes for the current user of the share. */
 290         uint32_t share_access;
 291         /* Does this filesystem honor
 292            sub second timestamps on files
 293            and directories when setting time ? */
 294         enum timestamp_set_resolution ts_res;
 295         char *connectpath;
 296         char *origpath;
 297
 298         struct vfs_handle_struct *vfs_handles;          /* for the new plugins */
 299
 300         /*
 301          * This represents the user information on this connection. Depending
 302          * on the vuid using this tid, this might change per SMB request.
 303          */
 304         struct auth_session_info *session_info;
 305
 306         /*
 307          * If the "force group" parameter is set, this is the primary gid that
 308          * may be used in the users token, depending on the vuid using this tid.
 309          */
 310         gid_t force_group_gid;
 311
 312         uint64_t vuid; /* vuid of user who *opened* this connection, or UID_FIELD_INVALID */
 313
 314         time_t lastused;
 315         time_t lastused_count;
 316         int num_files_open;
 317         unsigned int num_smb_operations; /* Count of smb operations on this tree. */
 318         int encrypt_level;
 319         bool encrypted_tid;
 320
 321         /* Semantics requested by the client or forced by the server config. */
 322         bool case_sensitive;
 323         bool case_preserve;
 324         bool short_case_preserve;
 325
 326         /* Semantics provided by the underlying filesystem. */
 327         int fs_capabilities;
 328         /* Device number of the directory of the share mount.
 329            Used to ensure unique FileIndex returns. */
 330         SMB_DEV_T base_share_dev;
 331
 332         name_compare_entry *hide_list; /* Per-share list of files to return as hidden. */
 333         name_compare_entry *veto_list; /* Per-share list of files to veto (never show). */
 334         name_compare_entry *veto_oplock_list; /* Per-share list of files to refuse oplocks on. */
 335         name_compare_entry *aio_write_behind_list; /* Per-share list of files to use aio write behind on. */
 336         struct dfree_cached_info *dfree_info;
 337         struct trans_state *pending_trans;
 338
 339         struct rpc_pipe_client *spoolss_pipe;
 340
 341 } connection_struct;
 342
 343 struct smbd_smb2_request;
 344 struct privilege_paths;
 345
 346 struct smb_request {
 347         uint8_t cmd;
 348         uint16 flags2;
 349         uint16 smbpid;
 350         uint64_t mid; /* For compatibility with SMB2. */
 351         uint32_t seqnum;
 352         uint64_t vuid; /* For compatibility with SMB2. */
 353         uint32_t tid;
 354         uint8  wct;
 355         const uint16_t *vwv;
 356         uint16_t buflen;
 357         const uint8_t *buf;
 358         const uint8 *inbuf;
 359
 360         /*
 361          * Async handling in the main smb processing loop is directed by
 362          * outbuf: reply_xxx routines indicate sync behaviour by putting their
 363          * reply into "outbuf". If they leave it as NULL, they take care of it
 364          * themselves, possibly later.
 365          *
 366          * If async handling is wanted, the reply_xxx routine must make sure
 367          * that it talloc_move()s the smb_req somewhere else.
 368          */
 369         uint8 *outbuf;
 370
 371         size_t unread_bytes;
 372         bool encrypted;
 373         connection_struct *conn;
 374         struct smbd_server_connection *sconn;
 375         struct smb_perfcount_data pcd;
 376
 377         /*
 378          * Chained request handling
 379          */
 380         struct files_struct *chain_fsp;
 381
 382         /*
 383          * state information for async smb handling
 384          */
 385         void *async_priv;
 386
 387         /*
 388          * Back pointer to smb2 request.
 389          */
 390         struct smbd_smb2_request *smb2req;
 391
 392         /*
 393          * Pathnames used if request done
 394          * under privilege.
 395          */
 396         struct privilege_paths *priv_paths;
 397
 398         /*
 399          * Request list for chained requests, we're part of it.
 400          */
 401         struct smb_request **chain;
 402 };
 403
 404 /*
 405  * Info about an alternate data stream
 406  */
 407
 408 struct stream_struct {
 409         off_t size;
 410         off_t alloc_size;
 411         char *name;
 412 };
 413
 414 /* time info */
 415 struct smb_file_time {
 416         struct timespec mtime;
 417         struct timespec atime;
 418         struct timespec ctime;
 419         struct timespec create_time;
 420 };
 421
 422 /*
 423  * smb_filename
 424  */
 425 struct smb_filename {
 426         char *base_name;
 427         char *stream_name;
 428         char *original_lcomp;
 429         SMB_STRUCT_STAT st;
 430 };
 431
 432 #define VFS_FIND(__fn__) while (handle->fns->__fn__##_fn==NULL) { \
 433                                 handle = handle->next; \
 434                          }
 435
 436 enum vfs_translate_direction {
 437         vfs_translate_to_unix = 0,
 438         vfs_translate_to_windows
 439 };
 440
 441 enum vfs_fallocate_mode {
 442         VFS_FALLOCATE_EXTEND_SIZE = 0,
 443         VFS_FALLOCATE_KEEP_SIZE = 1
 444 };
 445
 446 /*
 447     Available VFS operations. These values must be in sync with vfs_ops struct
 448     (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
 449     In particular, if new operations are added to vfs_ops, appropriate constants
 450     should be added to vfs_op_type so that order of them kept same as in vfs_ops.
 451 */
 452 struct shadow_copy_data;
 453
 454 struct vfs_fn_pointers {
 455         /* Disk operations */
 456
 457         int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
 458         void (*disconnect_fn)(struct vfs_handle_struct *handle);
 459         uint64_t (*disk_free_fn)(struct vfs_handle_struct *handle, const char *path, bool small_query, uint64_t *bsize,
 460                               uint64_t *dfree, uint64_t *dsize);
 461         int (*get_quota_fn)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
 462         int (*set_quota_fn)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
 463         int (*get_shadow_copy_data_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, struct shadow_copy_data *shadow_copy_data, bool labels);
 464         int (*statvfs_fn)(struct vfs_handle_struct *handle, const char *path, struct vfs_statvfs_struct *statbuf);
 465         uint32_t (*fs_capabilities_fn)(struct vfs_handle_struct *handle, enum timestamp_set_resolution *p_ts_res);
 466
 467         /*
 468          * Note: that "struct dfs_GetDFSReferral *r"
 469          * needs to be a valid TALLOC_CTX
 470          */
 471         NTSTATUS (*get_dfs_referrals_fn)(struct vfs_handle_struct *handle,
 472                                          struct dfs_GetDFSReferral *r);
 473
 474         /* Directory operations */
 475
 476         DIR *(*opendir_fn)(struct vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attributes);
 477         DIR *(*fdopendir_fn)(struct vfs_handle_struct *handle, files_struct *fsp, const char *mask, uint32 attributes);
 478         struct dirent *(*readdir_fn)(struct vfs_handle_struct *handle,
 479                                          DIR *dirp,
 480                                          SMB_STRUCT_STAT *sbuf);
 481         void (*seekdir_fn)(struct vfs_handle_struct *handle, DIR *dirp, long offset);
 482         long (*telldir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 483         void (*rewind_dir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 484         int (*mkdir_fn)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
 485         int (*rmdir_fn)(struct vfs_handle_struct *handle, const char *path);
 486         int (*closedir_fn)(struct vfs_handle_struct *handle, DIR *dir);
 487         void (*init_search_op_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 488
 489         /* File operations */
 490
 491         int (*open_fn)(struct vfs_handle_struct *handle,
 492                        struct smb_filename *smb_fname, files_struct *fsp,
 493                        int flags, mode_t mode);
 494         NTSTATUS (*create_file_fn)(struct vfs_handle_struct *handle,
 495                                    struct smb_request *req,
 496                                    uint16_t root_dir_fid,
 497                                    struct smb_filename *smb_fname,
 498                                    uint32_t access_mask,
 499                                    uint32_t share_access,
 500                                    uint32_t create_disposition,
 501                                    uint32_t create_options,
 502                                    uint32_t file_attributes,
 503                                    uint32_t oplock_request,
 504                                    uint64_t allocation_size,
 505                                    uint32_t private_flags,
 506                                    struct security_descriptor *sd,
 507                                    struct ea_list *ea_list,
 508                                    files_struct **result,
 509                                    int *pinfo);
 510         int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 511         ssize_t (*read_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n);
 512         ssize_t (*pread_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n, off_t offset);
 513         ssize_t (*write_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n);
 514         ssize_t (*pwrite_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n, off_t offset);
 515         off_t (*lseek_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset, int whence);
 516         ssize_t (*sendfile_fn)(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *header, off_t offset, size_t count);
 517         ssize_t (*recvfile_fn)(struct vfs_handle_struct *handle, int fromfd, files_struct *tofsp, off_t offset, size_t count);
 518         int (*rename_fn)(struct vfs_handle_struct *handle,
 519                          const struct smb_filename *smb_fname_src,
 520                          const struct smb_filename *smb_fname_dst);
 521         int (*fsync_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 522         int (*stat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_fname);
 523         int (*fstat_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
 524         int (*lstat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_filename);
 525         uint64_t (*get_alloc_size_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_STAT *sbuf);
 526         int (*unlink_fn)(struct vfs_handle_struct *handle,
 527                          const struct smb_filename *smb_fname);
 528         int (*chmod_fn)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
 529         int (*fchmod_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
 530         int (*chown_fn)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
 531         int (*fchown_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, uid_t uid, gid_t gid);
 532         int (*lchown_fn)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
 533         int (*chdir_fn)(struct vfs_handle_struct *handle, const char *path);
 534         char *(*getwd_fn)(struct vfs_handle_struct *handle);
 535         int (*ntimes_fn)(struct vfs_handle_struct *handle,
 536                          const struct smb_filename *smb_fname,
 537                          struct smb_file_time *ft);
 538         int (*ftruncate_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset);
 539         int (*fallocate_fn)(struct vfs_handle_struct *handle,
 540                             struct files_struct *fsp,
 541                             enum vfs_fallocate_mode mode,
 542                             off_t offset,
 543                             off_t len);
 544         bool (*lock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, off_t offset, off_t count, int type);
 545         int (*kernel_flock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp,
 546                                uint32 share_mode, uint32_t access_mask);
 547         int (*linux_setlease_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int leasetype);
 548         bool (*getlock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid);
 549         int (*symlink_fn)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
 550         int (*readlink_fn)(struct vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz);
 551         int (*link_fn)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
 552         int (*mknod_fn)(struct vfs_handle_struct *handle, const char *path, mode_t mode, SMB_DEV_T dev);
 553         char *(*realpath_fn)(struct vfs_handle_struct *handle, const char *path);
 554         NTSTATUS (*notify_watch_fn)(struct vfs_handle_struct *handle,
 555                                     struct sys_notify_context *ctx,
 556                                     const char *path,
 557                                     uint32_t *filter,
 558                                     uint32_t *subdir_filter,
 559                                     void (*callback)(struct sys_notify_context *ctx,
 560                                                      void *private_data,
 561                                                      struct notify_event *ev),
 562                                     void *private_data,
 563                                     void *handle_p);
 564         int (*chflags_fn)(struct vfs_handle_struct *handle, const char *path, unsigned int flags);
 565         struct file_id (*file_id_create_fn)(struct vfs_handle_struct *handle,
 566                                             const SMB_STRUCT_STAT *sbuf);
 567
 568         NTSTATUS (*streaminfo_fn)(struct vfs_handle_struct *handle,
 569                                   struct files_struct *fsp,
 570                                   const char *fname,
 571                                   TALLOC_CTX *mem_ctx,
 572                                   unsigned int *num_streams,
 573                                   struct stream_struct **streams);
 574
 575         int (*get_real_filename_fn)(struct vfs_handle_struct *handle,
 576                                     const char *path,
 577                                     const char *name,
 578                                     TALLOC_CTX *mem_ctx,
 579                                     char **found_name);
 580
 581         const char *(*connectpath_fn)(struct vfs_handle_struct *handle,
 582                                       const char *filename);
 583
 584         NTSTATUS (*brl_lock_windows_fn)(struct vfs_handle_struct *handle,
 585                                         struct byte_range_lock *br_lck,
 586                                         struct lock_struct *plock,
 587                                         bool blocking_lock,
 588                                         struct blocking_lock_record *blr);
 589
 590         bool (*brl_unlock_windows_fn)(struct vfs_handle_struct *handle,
 591                                       struct messaging_context *msg_ctx,
 592                                       struct byte_range_lock *br_lck,
 593                                       const struct lock_struct *plock);
 594
 595         bool (*brl_cancel_windows_fn)(struct vfs_handle_struct *handle,
 596                                       struct byte_range_lock *br_lck,
 597                                       struct lock_struct *plock,
 598                                       struct blocking_lock_record *blr);
 599
 600         bool (*strict_lock_fn)(struct vfs_handle_struct *handle,
 601                                struct files_struct *fsp,
 602                                struct lock_struct *plock);
 603
 604         void (*strict_unlock_fn)(struct vfs_handle_struct *handle,
 605                                  struct files_struct *fsp,
 606                                  struct lock_struct *plock);
 607
 608         NTSTATUS (*translate_name_fn)(struct vfs_handle_struct *handle,
 609                                       const char *name,
 610                                       enum vfs_translate_direction direction,
 611                                       TALLOC_CTX *mem_ctx,
 612                                       char **mapped_name);
 613
 614         NTSTATUS (*fsctl_fn)(struct vfs_handle_struct *handle,
 615                              struct files_struct *fsp,
 616                              TALLOC_CTX *ctx,
 617                              uint32_t function,
 618                              uint16_t req_flags,
 619                              const uint8_t *_in_data,
 620                              uint32_t in_len,
 621                              uint8_t **_out_data,
 622                              uint32_t max_out_len,
 623                              uint32_t *out_len);
 624
 625         /* NT ACL operations. */
 626
 627         NTSTATUS (*fget_nt_acl_fn)(struct vfs_handle_struct *handle,
 628                                    struct files_struct *fsp,
 629                                    uint32 security_info,
 630                                    struct security_descriptor **ppdesc);
 631         NTSTATUS (*get_nt_acl_fn)(struct vfs_handle_struct *handle,
 632                                   const char *name,
 633                                   uint32 security_info,
 634                                   struct security_descriptor **ppdesc);
 635         NTSTATUS (*fset_nt_acl_fn)(struct vfs_handle_struct *handle,
 636                                    struct files_struct *fsp,
 637                                    uint32 security_info_sent,
 638                                    const struct security_descriptor *psd);
 639
 640         NTSTATUS (*audit_file_fn)(struct vfs_handle_struct *handle,
 641                                   struct smb_filename *file,
 642                                   struct security_acl *sacl,
 643                                   uint32_t access_requested,
 644                                   uint32_t access_denied);
 645
 646         /* POSIX ACL operations. */
 647
 648         int (*chmod_acl_fn)(struct vfs_handle_struct *handle, const char *name, mode_t mode);
 649         int (*fchmod_acl_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
 650
 651         int (*sys_acl_get_entry_fn)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p);
 652         int (*sys_acl_get_tag_type_fn)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_TAG_T *tag_type_p);
 653         int (*sys_acl_get_permset_fn)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p);
 654         void * (*sys_acl_get_qualifier_fn)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d);
 655         SMB_ACL_T (*sys_acl_get_file_fn)(struct vfs_handle_struct *handle, const char *path_p, SMB_ACL_TYPE_T type);
 656         SMB_ACL_T (*sys_acl_get_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 657         int (*sys_acl_clear_perms_fn)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset);
 658         int (*sys_acl_add_perm_fn)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
 659         char * (*sys_acl_to_text_fn)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, ssize_t *plen);
 660         SMB_ACL_T (*sys_acl_init_fn)(struct vfs_handle_struct *handle, int count);
 661         int (*sys_acl_create_entry_fn)(struct vfs_handle_struct *handle, SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry);
 662         int (*sys_acl_set_tag_type_fn)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype);
 663         int (*sys_acl_set_qualifier_fn)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, void *qual);
 664         int (*sys_acl_set_permset_fn)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset);
 665         int (*sys_acl_valid_fn)(struct vfs_handle_struct *handle, SMB_ACL_T theacl );
 666         int (*sys_acl_set_file_fn)(struct vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
 667         int (*sys_acl_set_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_ACL_T theacl);
 668         int (*sys_acl_delete_def_file_fn)(struct vfs_handle_struct *handle, const char *path);
 669         int (*sys_acl_get_perm_fn)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
 670         int (*sys_acl_free_text_fn)(struct vfs_handle_struct *handle, char *text);
 671         int (*sys_acl_free_acl_fn)(struct vfs_handle_struct *handle, SMB_ACL_T posix_acl);
 672         int (*sys_acl_free_qualifier_fn)(struct vfs_handle_struct *handle, void *qualifier, SMB_ACL_TAG_T tagtype);
 673
 674         /* EA operations. */
 675         ssize_t (*getxattr_fn)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
 676         ssize_t (*fgetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size);
 677         ssize_t (*listxattr_fn)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
 678         ssize_t (*flistxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size);
 679         int (*removexattr_fn)(struct vfs_handle_struct *handle, const char *path, const char *name);
 680         int (*fremovexattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name);
 681         int (*setxattr_fn)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
 682         int (*fsetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags);
 683
 684         /* aio operations */
 685         int (*aio_read_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
 686         int (*aio_write_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
 687         ssize_t (*aio_return_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
 688         int (*aio_cancel_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
 689         int (*aio_error_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
 690         int (*aio_fsync_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb);
 691         int (*aio_suspend_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_AIOCB * const aiocb[], int n, const struct timespec *timeout);
 692         bool (*aio_force_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 693
 694         /* offline operations */
 695         bool (*is_offline_fn)(struct vfs_handle_struct *handle,
 696                            const struct smb_filename *fname,
 697                            SMB_STRUCT_STAT *sbuf);
 698         int (*set_offline_fn)(struct vfs_handle_struct *handle,
 699                            const struct smb_filename *fname);
 700 };
 701
 702 /*
 703     VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
 704     which describes all operations this module is willing to intercept.
 705     VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
 706     using this information.
 707 */
 708
 709 typedef struct vfs_handle_struct {
 710         struct vfs_handle_struct  *next, *prev;
 711         const char *param;
 712         struct connection_struct *conn;
 713         const struct vfs_fn_pointers *fns;
 714         void *data;
 715         void (*free_data)(void **data);
 716 } vfs_handle_struct;
 717
 718
 719 typedef struct vfs_statvfs_struct {
 720         /* For undefined recommended transfer size return -1 in that field */
 721         uint32 OptimalTransferSize;  /* bsize on some os, iosize on other os */
 722         uint32 BlockSize;
 723
 724         /*
 725          The next three fields are in terms of the block size.
 726          (above). If block size is unknown, 4096 would be a
 727          reasonable block size for a server to report.
 728          Note that returning the blocks/blocksavail removes need
 729          to make a second call (to QFSInfo level 0x103 to get this info.
 730          UserBlockAvail is typically less than or equal to BlocksAvail,
 731          if no distinction is made return the same value in each.
 732         */
 733
 734         uint64_t TotalBlocks;
 735         uint64_t BlocksAvail;       /* bfree */
 736         uint64_t UserBlocksAvail;   /* bavail */
 737
 738         /* For undefined Node fields or FSID return -1 */
 739         uint64_t TotalFileNodes;
 740         uint64_t FreeFileNodes;
 741         uint64_t FsIdentifier;   /* fsid */
 742         /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
 743         /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call   */
 744
 745         int FsCapabilities;
 746 } vfs_statvfs_struct;
 747
 748 /* Add a new FSP extension of the given type. Returns a pointer to the
 749  * extenstion data.
 750  */
 751 #define VFS_ADD_FSP_EXTENSION(handle, fsp, type, destroy_fn)            \
 752     vfs_add_fsp_extension_notype(handle, (fsp), sizeof(type), (destroy_fn))
 753
 754 /* Return a pointer to the existing FSP extension data. */
 755 #define VFS_FETCH_FSP_EXTENSION(handle, fsp) \
 756     vfs_fetch_fsp_extension(handle, (fsp))
 757
 758 /* Return the talloc context associated with an FSP extension. */
 759 #define VFS_MEMCTX_FSP_EXTENSION(handle, fsp) \
 760     vfs_memctx_fsp_extension(handle, (fsp))
 761
 762 /* Remove and destroy an FSP extension. */
 763 #define VFS_REMOVE_FSP_EXTENSION(handle, fsp) \
 764     vfs_remove_fsp_extension((handle), (fsp))
 765
 766 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
 767         if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
 768                 DEBUG(0,("%s() failed to get vfs_handle->data!\n",__FUNCTION__)); \
 769                 ret; \
 770         } \
 771 }
 772
 773 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
 774         if (!(handle)) { \
 775                 DEBUG(0,("%s() failed to set handle->data!\n",__FUNCTION__)); \
 776                 ret; \
 777         } else { \
 778                 if ((handle)->free_data) { \
 779                         (handle)->free_data(&(handle)->data); \
 780                 } \
 781                 (handle)->data = (void *)datap; \
 782                 (handle)->free_data = free_fn; \
 783         } \
 784 }
 785
 786 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
 787         if ((handle) && (handle)->free_data) { \
 788                 (handle)->free_data(&(handle)->data); \
 789         } \
 790 }
 791
 792 /* Check whether module-specific data handle was already allocated or not */
 793 #define SMB_VFS_HANDLE_TEST_DATA(handle)  ( !(handle) || !(handle)->data ? False : True )
 794
 795 #define SMB_VFS_OP(x) ((void *) x)
 796
 797 #define DEFAULT_VFS_MODULE_NAME "/[Default VFS]/"
 798
 799 #include "vfs_macros.h"
 800
 801 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
 802                          const char *service, const char *user);
 803 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle);
 804 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
 805                                 const char *path, bool small_query,
 806                                 uint64_t *bsize, uint64_t *dfree,
 807                                 uint64_t *dsize);
 808 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
 809                            enum SMB_QUOTA_TYPE qtype, unid_t id,
 810                            SMB_DISK_QUOTA *qt);
 811 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
 812                            enum SMB_QUOTA_TYPE qtype, unid_t id,
 813                            SMB_DISK_QUOTA *qt);
 814 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
 815                                       struct files_struct *fsp,
 816                                       struct shadow_copy_data *shadow_copy_data,
 817                                       bool labels);
 818 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle, const char *path,
 819                          struct vfs_statvfs_struct *statbuf);
 820 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
 821                                       enum timestamp_set_resolution *p_ts_res);
 822 /*
 823  * Note: that "struct dfs_GetDFSReferral *r" needs to be a valid TALLOC_CTX
 824  */
 825 NTSTATUS smb_vfs_call_get_dfs_referrals(struct vfs_handle_struct *handle,
 826                                         struct dfs_GetDFSReferral *r);
 827 DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
 828                                      const char *fname, const char *mask,
 829                                      uint32 attributes);
 830 DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
 831                                         struct files_struct *fsp,
 832                                         const char *mask,
 833                                         uint32 attributes);
 834 struct dirent *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
 835                                         DIR *dirp,
 836                                         SMB_STRUCT_STAT *sbuf);
 837 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
 838                           DIR *dirp, long offset);
 839 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
 840                           DIR *dirp);
 841 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
 842                              DIR *dirp);
 843 int smb_vfs_call_mkdir(struct vfs_handle_struct *handle, const char *path,
 844                        mode_t mode);
 845 int smb_vfs_call_rmdir(struct vfs_handle_struct *handle, const char *path);
 846 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
 847                           DIR *dir);
 848 void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
 849                                  DIR *dirp);
 850 int smb_vfs_call_open(struct vfs_handle_struct *handle,
 851                       struct smb_filename *smb_fname, struct files_struct *fsp,
 852                       int flags, mode_t mode);
 853 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
 854                                   struct smb_request *req,
 855                                   uint16_t root_dir_fid,
 856                                   struct smb_filename *smb_fname,
 857                                   uint32_t access_mask,
 858                                   uint32_t share_access,
 859                                   uint32_t create_disposition,
 860                                   uint32_t create_options,
 861                                   uint32_t file_attributes,
 862                                   uint32_t oplock_request,
 863                                   uint64_t allocation_size,
 864                                   uint32_t private_flags,
 865                                   struct security_descriptor *sd,
 866                                   struct ea_list *ea_list,
 867                                   files_struct **result,
 868                                   int *pinfo);
 869 int smb_vfs_call_close(struct vfs_handle_struct *handle,
 870                        struct files_struct *fsp);
 871 ssize_t smb_vfs_call_read(struct vfs_handle_struct *handle,
 872                           struct files_struct *fsp, void *data, size_t n);
 873 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
 874                            struct files_struct *fsp, void *data, size_t n,
 875                            off_t offset);
 876 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
 877                            struct files_struct *fsp, const void *data,
 878                            size_t n);
 879 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
 880                             struct files_struct *fsp, const void *data,
 881                             size_t n, off_t offset);
 882 off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
 883                              struct files_struct *fsp, off_t offset,
 884                              int whence);
 885 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
 886                               files_struct *fromfsp, const DATA_BLOB *header,
 887                               off_t offset, size_t count);
 888 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
 889                               files_struct *tofsp, off_t offset,
 890                               size_t count);
 891 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
 892                         const struct smb_filename *smb_fname_src,
 893                         const struct smb_filename *smb_fname_dst);
 894 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
 895                        struct files_struct *fsp);
 896 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
 897                       struct smb_filename *smb_fname);
 898 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
 899                        struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
 900 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
 901                        struct smb_filename *smb_filename);
 902 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
 903                                      struct files_struct *fsp,
 904                                      const SMB_STRUCT_STAT *sbuf);
 905 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
 906                         const struct smb_filename *smb_fname);
 907 int smb_vfs_call_chmod(struct vfs_handle_struct *handle, const char *path,
 908                        mode_t mode);
 909 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
 910                         struct files_struct *fsp, mode_t mode);
 911 int smb_vfs_call_chown(struct vfs_handle_struct *handle, const char *path,
 912                        uid_t uid, gid_t gid);
 913 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
 914                         struct files_struct *fsp, uid_t uid, gid_t gid);
 915 int smb_vfs_call_lchown(struct vfs_handle_struct *handle, const char *path,
 916                         uid_t uid, gid_t gid);
 917 int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path);
 918 char *smb_vfs_call_getwd(struct vfs_handle_struct *handle);
 919 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
 920                         const struct smb_filename *smb_fname,
 921                         struct smb_file_time *ft);
 922 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
 923                            struct files_struct *fsp, off_t offset);
 924 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
 925                         struct files_struct *fsp,
 926                         enum vfs_fallocate_mode mode,
 927                         off_t offset,
 928                         off_t len);
 929 bool smb_vfs_call_lock(struct vfs_handle_struct *handle,
 930                        struct files_struct *fsp, int op, off_t offset,
 931                        off_t count, int type);
 932 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
 933                               struct files_struct *fsp, uint32 share_mode,
 934                               uint32_t access_mask);
 935 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
 936                                 struct files_struct *fsp, int leasetype);
 937 bool smb_vfs_call_getlock(struct vfs_handle_struct *handle,
 938                           struct files_struct *fsp, off_t *poffset,
 939                           off_t *pcount, int *ptype, pid_t *ppid);
 940 int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
 941                          const char *newpath);
 942 int smb_vfs_call_readlink(struct vfs_handle_struct *handle,
 943                           const char *path, char *buf, size_t bufsiz);
 944 int smb_vfs_call_link(struct vfs_handle_struct *handle, const char *oldpath,
 945                       const char *newpath);
 946 int smb_vfs_call_mknod(struct vfs_handle_struct *handle, const char *path,
 947                        mode_t mode, SMB_DEV_T dev);
 948 char *smb_vfs_call_realpath(struct vfs_handle_struct *handle, const char *path);
 949 NTSTATUS smb_vfs_call_notify_watch(struct vfs_handle_struct *handle,
 950                                    struct sys_notify_context *ctx,
 951                                    const char *name,
 952                                    uint32_t *filter,
 953                                    uint32_t *subdir_filter,
 954                                    void (*callback)(struct sys_notify_context *ctx,
 955                                                     void *private_data,
 956                                                     struct notify_event *ev),
 957                                    void *private_data, void *handle_p);
 958 int smb_vfs_call_chflags(struct vfs_handle_struct *handle, const char *path,
 959                          unsigned int flags);
 960 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
 961                                            const SMB_STRUCT_STAT *sbuf);
 962 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
 963                                  struct files_struct *fsp,
 964                                  const char *fname,
 965                                  TALLOC_CTX *mem_ctx,
 966                                  unsigned int *num_streams,
 967                                  struct stream_struct **streams);
 968 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
 969                                    const char *path, const char *name,
 970                                    TALLOC_CTX *mem_ctx, char **found_name);
 971 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
 972                                      const char *filename);
 973 NTSTATUS smb_vfs_call_brl_lock_windows(struct vfs_handle_struct *handle,
 974                                        struct byte_range_lock *br_lck,
 975                                        struct lock_struct *plock,
 976                                        bool blocking_lock,
 977                                        struct blocking_lock_record *blr);
 978 bool smb_vfs_call_brl_unlock_windows(struct vfs_handle_struct *handle,
 979                                      struct messaging_context *msg_ctx,
 980                                      struct byte_range_lock *br_lck,
 981                                      const struct lock_struct *plock);
 982 bool smb_vfs_call_brl_cancel_windows(struct vfs_handle_struct *handle,
 983                                      struct byte_range_lock *br_lck,
 984                                      struct lock_struct *plock,
 985                                      struct blocking_lock_record *blr);
 986 bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
 987                               struct files_struct *fsp,
 988                               struct lock_struct *plock);
 989 void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
 990                                 struct files_struct *fsp,
 991                                 struct lock_struct *plock);
 992 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
 993                                      const char *name,
 994                                      enum vfs_translate_direction direction,
 995                                      TALLOC_CTX *mem_ctx,
 996                                      char **mapped_name);
 997 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
 998                             struct files_struct *fsp,
 999                             TALLOC_CTX *ctx,
1000                             uint32_t function,
1001                             uint16_t req_flags,
1002                             const uint8_t *_in_data,
1003                             uint32_t in_len,
1004                             uint8_t **_out_data,
1005                             uint32_t max_out_len,
1006                             uint32_t *out_len);
1007 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
1008                                   struct files_struct *fsp,
1009                                   uint32 security_info,
1010                                   struct security_descriptor **ppdesc);
1011 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
1012                                  const char *name,
1013                                  uint32 security_info,
1014                                  struct security_descriptor **ppdesc);
1015 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
1016                                   struct files_struct *fsp,
1017                                   uint32 security_info_sent,
1018                                   const struct security_descriptor *psd);
1019 NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
1020                                  struct smb_filename *file,
1021                                  struct security_acl *sacl,
1022                                  uint32_t access_requested,
1023                                  uint32_t access_denied);
1024 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle, const char *name,
1025                            mode_t mode);
1026 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
1027                             struct files_struct *fsp, mode_t mode);
1028 int smb_vfs_call_sys_acl_get_entry(struct vfs_handle_struct *handle,
1029                                    SMB_ACL_T theacl, int entry_id,
1030                                    SMB_ACL_ENTRY_T *entry_p);
1031 int smb_vfs_call_sys_acl_get_tag_type(struct vfs_handle_struct *handle,
1032                                       SMB_ACL_ENTRY_T entry_d,
1033                                       SMB_ACL_TAG_T *tag_type_p);
1034 int smb_vfs_call_sys_acl_get_permset(struct vfs_handle_struct *handle,
1035                                      SMB_ACL_ENTRY_T entry_d,
1036                                      SMB_ACL_PERMSET_T *permset_p);
1037 void * smb_vfs_call_sys_acl_get_qualifier(struct vfs_handle_struct *handle,
1038                                           SMB_ACL_ENTRY_T entry_d);
1039 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
1040                                         const char *path_p,
1041                                         SMB_ACL_TYPE_T type);
1042 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
1043                                       struct files_struct *fsp);
1044 int smb_vfs_call_sys_acl_clear_perms(struct vfs_handle_struct *handle,
1045                                      SMB_ACL_PERMSET_T permset);
1046 int smb_vfs_call_sys_acl_add_perm(struct vfs_handle_struct *handle,
1047                                   SMB_ACL_PERMSET_T permset,
1048                                   SMB_ACL_PERM_T perm);
1049 char * smb_vfs_call_sys_acl_to_text(struct vfs_handle_struct *handle,
1050                                     SMB_ACL_T theacl, ssize_t *plen);
1051 SMB_ACL_T smb_vfs_call_sys_acl_init(struct vfs_handle_struct *handle,
1052                                     int count);
1053 int smb_vfs_call_sys_acl_create_entry(struct vfs_handle_struct *handle,
1054                                       SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry);
1055 int smb_vfs_call_sys_acl_set_tag_type(struct vfs_handle_struct *handle,
1056                                       SMB_ACL_ENTRY_T entry,
1057                                       SMB_ACL_TAG_T tagtype);
1058 int smb_vfs_call_sys_acl_set_qualifier(struct vfs_handle_struct *handle,
1059                                        SMB_ACL_ENTRY_T entry, void *qual);
1060 int smb_vfs_call_sys_acl_set_permset(struct vfs_handle_struct *handle,
1061                                      SMB_ACL_ENTRY_T entry,
1062                                      SMB_ACL_PERMSET_T permset);
1063 int smb_vfs_call_sys_acl_valid(struct vfs_handle_struct *handle,
1064                                SMB_ACL_T theacl);
1065 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
1066                                   const char *name, SMB_ACL_TYPE_T acltype,
1067                                   SMB_ACL_T theacl);
1068 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
1069                                 struct files_struct *fsp, SMB_ACL_T theacl);
1070 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1071                                          const char *path);
1072 int smb_vfs_call_sys_acl_get_perm(struct vfs_handle_struct *handle,
1073                                   SMB_ACL_PERMSET_T permset,
1074                                   SMB_ACL_PERM_T perm);
1075 int smb_vfs_call_sys_acl_free_text(struct vfs_handle_struct *handle,
1076                                    char *text);
1077 int smb_vfs_call_sys_acl_free_acl(struct vfs_handle_struct *handle,
1078                                   SMB_ACL_T posix_acl);
1079 int smb_vfs_call_sys_acl_free_qualifier(struct vfs_handle_struct *handle,
1080                                         void *qualifier, SMB_ACL_TAG_T tagtype);
1081 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
1082                               const char *path, const char *name, void *value,
1083                               size_t size);
1084 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
1085                                struct files_struct *fsp, const char *name,
1086                                void *value, size_t size);
1087 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
1088                                const char *path, char *list, size_t size);
1089 ssize_t smb_vfs_call_llistxattr(struct vfs_handle_struct *handle,
1090                                 const char *path, char *list, size_t size);
1091 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
1092                                 struct files_struct *fsp, char *list,
1093                                 size_t size);
1094 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
1095                              const char *path, const char *name);
1096 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
1097                               struct files_struct *fsp, const char *name);
1098 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle, const char *path,
1099                           const char *name, const void *value, size_t size,
1100                           int flags);
1101 int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
1102                            const char *name, const void *value, size_t size,
1103                            int flags);
1104 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
1105                            struct files_struct *fsp, const char *name,
1106                            const void *value, size_t size, int flags);
1107 int smb_vfs_call_aio_read(struct vfs_handle_struct *handle,
1108                           struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
1109 int smb_vfs_call_aio_write(struct vfs_handle_struct *handle,
1110                            struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
1111 ssize_t smb_vfs_call_aio_return(struct vfs_handle_struct *handle,
1112                                 struct files_struct *fsp,
1113                                 SMB_STRUCT_AIOCB *aiocb);
1114 int smb_vfs_call_aio_cancel(struct vfs_handle_struct *handle,
1115                             struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
1116 int smb_vfs_call_aio_error(struct vfs_handle_struct *handle,
1117                            struct files_struct *fsp,
1118                            SMB_STRUCT_AIOCB *aiocb);
1119 int smb_vfs_call_aio_fsync(struct vfs_handle_struct *handle,
1120                            struct files_struct *fsp, int op,
1121                            SMB_STRUCT_AIOCB *aiocb);
1122 int smb_vfs_call_aio_suspend(struct vfs_handle_struct *handle,
1123                              struct files_struct *fsp,
1124                              const SMB_STRUCT_AIOCB * const aiocb[], int n,
1125                              const struct timespec *timeout);
1126 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
1127                             struct files_struct *fsp);
1128 bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
1129                              const struct smb_filename *fname,
1130                              SMB_STRUCT_STAT *sbuf);
1131 int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
1132                              const struct smb_filename *fname);
1133
1134 NTSTATUS smb_register_vfs(int version, const char *name,
1135                           const struct vfs_fn_pointers *fns);
1136 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
1137                                    files_struct *fsp, size_t ext_size,
1138                                    void (*destroy_fn)(void *p_data));
1139 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1140 void vfs_remove_all_fsp_extensions(struct files_struct *fsp);
1141 void *vfs_memctx_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1142 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1143
1144 #endif /* _VFS_H */