source3/include/vfs.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3    VFS structures and parameters
   4    Copyright (C) Jeremy Allison                         1999-2005
   5    Copyright (C) Tim Potter                             1999
   6    Copyright (C) Alexander Bokovoy                      2002-2005
   7    Copyright (C) Stefan (metze) Metzmacher              2003
   8    Copyright (C) Volker Lendecke                        2009
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22
  23    This work was sponsored by Optifacio Software Services, Inc.
  24 */
  25
  26 #ifndef _VFS_H
  27 #define _VFS_H
  28
  29 /* Avoid conflict with an AIX include file */
  30
  31 #ifdef vfs_ops
  32 #undef vfs_ops
  33 #endif
  34
  35 /*
  36  * As we're now (thanks Andrew ! :-) using file_structs and connection
  37  * structs in the vfs - then anyone writing a vfs must include includes.h...
  38  */
  39
  40 /*
  41  * This next constant specifies the version number of the VFS interface
  42  * this smbd will load. Increment this if *ANY* changes are made to the
  43  * vfs_ops below. JRA.
  44  *
  45  * If you change anything here, please also update modules/vfs_full_audit.c.
  46  * VL.
  47  */
  48
  49 /* Changed to version 2 for CIFS UNIX extensions (mknod and link added). JRA. */
  50 /* Changed to version 3 for POSIX acl extensions. JRA. */
  51 /* Changed to version 4 for cascaded VFS interface. Alexander Bokovoy. */
  52 /* Changed to version 5 for sendfile addition. JRA. */
  53 /* Changed to version 6 for the new module system, fixed cascading and quota functions. --metze */
  54 /* Changed to version 7 to include the get_nt_acl info parameter. JRA. */
  55 /* Changed to version 8 includes EA calls. JRA. */
  56 /* Changed to version 9 to include the get_shadow_data call. --metze */
  57 /* Changed to version 10 to include pread/pwrite calls. */
  58 /* Changed to version 11 to include seekdir/telldir/rewinddir calls. JRA */
  59 /* Changed to version 12 to add mask and attributes to opendir(). JRA
  60    Also include aio calls. JRA. */
  61 /* Changed to version 13 as the internal structure of files_struct has changed. JRA */
  62 /* Changed to version 14 as we had to change DIR to SMB_STRUCT_DIR. JRA */
  63 /* Changed to version 15 as we added the statvfs call. JRA */
  64 /* Changed to version 16 as we added the getlock call. JRA */
  65 /* Changed to version 17 as we removed redundant connection_struct parameters. --jpeach */
  66 /* Changed to version 18 to add fsp parameter to the open call -- jpeach
  67    Also include kernel_flock call - jmcd */
  68 /* Changed to version 19, kernel change notify has been merged
  69    Also included linux setlease call - jmcd */
  70 /* Changed to version 20, use ntimes call instead of utime (greater
  71  * timestamp resolition. JRA. */
  72 /* Changed to version21 to add chflags operation -- jpeach */
  73 /* Changed to version22 to add lchown operation -- jra */
  74 /* Leave at 22 - not yet released. But change set_nt_acl to return an NTSTATUS. jra. */
  75 /* Leave at 22 - not yet released. Add file_id_create operation. --metze */
  76 /* Leave at 22 - not yet released. Change all BOOL parameters (int) to bool. jra. */
  77 /* Leave at 22 - not yet released. Added recvfile. */
  78 /* Leave at 22 - not yet released. Change get_nt_acl to return NTSTATUS - vl */
  79 /* Leave at 22 - not yet released. Change get_nt_acl to *not* take a
  80  * files_struct. - obnox.*/
  81 /* Leave at 22 - not yet released. Remove parameter fd from fget_nt_acl. - obnox */
  82 /* Leave at 22 - not yet released. Remove parameter fd from gset_nt_acl. - obnox */
  83 /* Leave at 22 - not yet released. Remove parameter fd from pread. - obnox */
  84 /* Leave at 22 - not yet released. Remove parameter fd from pwrite. - obnox */
  85 /* Leave at 22 - not yet released. Remove parameter fd from lseek. - obnox */
  86 /* Leave at 22 - not yet released. Remove parameter fd from fsync. - obnox */
  87 /* Leave at 22 - not yet released. Remove parameter fd from fstat. - obnox */
  88 /* Leave at 22 - not yet released. Remove parameter fd from fchmod. - obnox */
  89 /* Leave at 22 - not yet released. Remove parameter fd from fchown. - obnox */
  90 /* Leave at 22 - not yet released. Remove parameter fd from ftruncate. - obnox */
  91 /* Leave at 22 - not yet released. Remove parameter fd from lock. - obnox */
  92 /* Leave at 22 - not yet released. Remove parameter fd from kernel_flock. - obnox */
  93 /* Leave at 22 - not yet released. Remove parameter fd from linux_setlease. - obnox */
  94 /* Leave at 22 - not yet released. Remove parameter fd from getlock. - obnox */
  95 /* Leave at 22 - not yet released. Remove parameter fd from sys_acl_get_fd. - obnox */
  96 /* Leave at 22 - not yet released. Remove parameter fd from fchmod_acl. - obnox */
  97 /* Leave at 22 - not yet released. Remove parameter fd from sys_acl_set_fd. - obnox */
  98 /* Leave at 22 - not yet released. Remove parameter fd from fgetxattr. - obnox */
  99 /* Leave at 22 - not yet released. Remove parameter fd from flistxattr. - obnox */
 100 /* Leave at 22 - not yet released. Remove parameter fd from fremovexattr. - obnox */
 101 /* Leave at 22 - not yet released. Remove parameter fd from fsetxattr. - obnox */
 102 /* Leave at 22 - not yet released. Remove parameter fd from aio_cancel. - obnox */
 103 /* Leave at 22 - not yet released. Remove parameter fd from read. - obnox */
 104 /* Leave at 22 - not yet released. Remove parameter fd from write. - obnox */
 105 /* Leave at 22 - not yet released. Remove parameter fromfd from sendfile. - obnox */
 106 /* Leave at 22 - not yet released. Remove parameter fromfd from recvfile. - obnox */
 107 /* Leave at 22 - not yet released. Additional change: add operations for offline files -- ab */
 108 /* Leave at 22 - not yet released. Add the streaminfo call. -- jpeach, vl */
 109 /* Leave at 22 - not yet released. Remove parameter fd from close_fn. - obnox */
 110 /* Changed to version 23 - remove set_nt_acl call. This can only be done via an
 111    open handle. JRA. */
 112 /* Changed to version 24 - make security descriptor const in fset_nt_acl. JRA. */
 113 /* Changed to version 25 - Jelmer's change from SMB_BIG_UINT to uint64_t. */
 114 /* Leave at 25 - not yet released. Add create_file call. -- tprouty. */
 115 /* Leave at 25 - not yet released. Add create time to ntimes. -- tstecher. */
 116 /* Leave at 25 - not yet released. Add get_alloc_size call. -- tprouty. */
 117 /* Leave at 25 - not yet released. Add SMB_STRUCT_STAT to readdir. - sdann */
 118 /* Leave at 25 - not yet released. Add init_search_op call. - sdann */
 119 /* Leave at 25 - not yet released. Add locking calls. -- zkirsch. */
 120 /* Leave at 25 - not yet released. Add strict locking calls. -- drichards. */
 121 /* Changed to version 26 - Plumb struct smb_filename to SMB_VFS_CREATE_FILE,
 122                            SMB_VFS_OPEN, SMB_VFS_STAT, SMB_VFS_LSTAT,
 123                            SMB_VFS_RENAME, SMB_VFS_UNLINK, SMB_VFS_NTIMES.  */
 124 /* Changed to version 27 - not yet released. Added enum timestamp_set_resolution
 125  *                         return to fs_capabilities call. JRA. */
 126 /* Leave at 27 - not yet released. Add translate_name VFS call to convert
 127                  UNIX names to Windows supported names -- asrinivasan. */
 128 /* Changed to version 28 - Add private_flags uint32_t to CREATE call. */
 129 /* Leave at 28 - not yet released. Change realpath to assume NULL and return a
 130                  malloc'ed path. JRA. */
 131 /* Leave at 28 - not yet released. Move posix_fallocate into the VFS
 132                 where it belongs. JRA. */
 133 /* Leave at 28 - not yet released. Rename posix_fallocate to fallocate
 134                 to split out the two possible uses. JRA. */
 135 /* Leave at 28 - not yet released. Add fdopendir. JRA. */
 136 /* Leave at 28 - not yet released. Rename open function to open_fn. - gd */
 137 /* Leave at 28 - not yet released. Make getwd function always return malloced memory. JRA. */
 138 /* Bump to version 29 - Samba 3.6.0 will ship with interface version 28. */
 139 /* Leave at 29 - not yet releases. Add fsctl. Richard Sharpe */
 140 /* Leave at 29 - not yet released. add SMB_VFS_GET_DFS_REFERRAL() - metze */
 141 /* Leave at 29 - not yet released. Remove l{list,get,set,remove}xattr - abartlet */
 142 /* Leave at 29 - not yet released. move to plain off_t - abartlet */
 143 /* Leave at 29 - not yet released. Remove sys_acl functions other than set and get - abartlet */
 144 /* Leave at 29 - not yet released. Added backup_intent bool to files_struct - JRA */
 145 /* Leave at 29 - not yet released. Add durable handle functions - metze/obnox */
 146 /* Leave at 29 - not yet released. Added sys_acl_blob_get_file and sys_acl_blob_get_fd */
 147 /* Bump to version 30 - Samba 4.0.0 will ship with interface version 30 */
 148 #define SMB_VFS_INTERFACE_VERSION 30
 149
 150 /*
 151     All intercepted VFS operations must be declared as static functions inside module source
 152     in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
 153     example VFS modules for more details.
 154 */
 155
 156 /* VFS operations structure */
 157
 158 struct vfs_handle_struct;
 159 struct connection_struct;
 160 struct files_struct;
 161 struct security_descriptor;
 162 struct vfs_statvfs_struct;
 163 struct smb_request;
 164 struct ea_list;
 165 struct smb_file_time;
 166 struct blocking_lock_record;
 167 struct smb_filename;
 168 struct dfs_GetDFSReferral;
 169
 170 typedef union unid_t {
 171         uid_t uid;
 172         gid_t gid;
 173 } unid_t;
 174
 175 struct fd_handle {
 176         size_t ref_count;
 177         int fd;
 178         uint64_t position_information;
 179         off_t pos;
 180         uint32 private_options; /* NT Create options, but we only look at
 181                                  * NTCREATEX_OPTIONS_PRIVATE_DENY_DOS and
 182                                  * NTCREATEX_OPTIONS_PRIVATE_DENY_FCB and
 183                                  * NTCREATEX_OPTIONS_PRIVATE_DELETE_ON_CLOSE
 184                                  * for print files *only*, where
 185                                  * DELETE_ON_CLOSE is not stored in the share
 186                                  * mode database.
 187                                  */
 188         unsigned long gen_id;
 189 };
 190
 191 typedef struct files_struct {
 192         struct files_struct *next, *prev;
 193         uint64_t fnum;
 194         struct smbXsrv_open *op;
 195         struct connection_struct *conn;
 196         struct fd_handle *fh;
 197         unsigned int num_smb_operations;
 198         struct file_id file_id;
 199         uint64_t initial_allocation_size; /* Faked up initial allocation on disk. */
 200         uint16 file_pid;
 201         uint64_t vuid; /* SMB2 compat */
 202         struct write_cache *wcp;
 203         struct timeval open_time;
 204         uint32 access_mask;             /* NTCreateX access bits (FILE_READ_DATA etc.) */
 205         uint32 share_access;            /* NTCreateX share constants (FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE). */
 206
 207         bool update_write_time_triggered;
 208         struct timed_event *update_write_time_event;
 209         bool update_write_time_on_close;
 210         struct timespec close_write_time;
 211         bool write_time_forced;
 212
 213         int oplock_type;
 214         int sent_oplock_break;
 215         struct timed_event *oplock_timeout;
 216         struct lock_struct last_lock_failure;
 217         int current_lock_count; /* Count the number of outstanding locks and pending locks. */
 218
 219         struct share_mode_entry *pending_break_messages;
 220         int num_pending_break_messages;
 221
 222         bool can_lock;
 223         bool can_read;
 224         bool can_write;
 225         bool modified;
 226         bool is_directory;
 227         bool aio_write_behind;
 228         bool lockdb_clean;
 229         bool initial_delete_on_close; /* Only set at NTCreateX if file was created. */
 230         bool delete_on_close;
 231         bool posix_open;
 232         bool is_sparse;
 233         bool backup_intent; /* Handle was successfully opened with backup intent
 234                                 and opener has privilege to do so. */
 235         struct smb_filename *fsp_name;
 236         uint32_t name_hash;             /* Jenkins hash of full pathname. */
 237         uint64_t mid;                   /* Mid of the operation that created us. */
 238
 239         struct vfs_fsp_data *vfs_extension;
 240         struct fake_file_handle *fake_file_handle;
 241
 242         struct notify_change_buf *notify;
 243
 244         struct files_struct *base_fsp; /* placeholder for delete on close */
 245
 246         /*
 247          * Read-only cached brlock record, thrown away when the
 248          * brlock.tdb seqnum changes. This avoids fetching data from
 249          * the brlock.tdb on every read/write call.
 250          */
 251         int brlock_seqnum;
 252         struct byte_range_lock *brlock_rec;
 253
 254         struct dptr_struct *dptr;
 255
 256         /* if not NULL, means this is a print file */
 257         struct print_file_data *print_file;
 258
 259         unsigned num_aio_requests;
 260         struct tevent_req **aio_requests;
 261
 262         /*
 263          * If a close request comes in while we still have aio_requests
 264          * around, we need to hold back the close. When all aio_requests are
 265          * done, the aio completion routines need tevent_wait_done() on
 266          * this. A bit ugly, but before we have close_file() fully async
 267          * possibly the simplest approach. Thanks, Jeremy for the idea.
 268          */
 269         struct tevent_req *deferred_close;
 270 } files_struct;
 271
 272 struct vuid_cache_entry {
 273         struct auth_session_info *session_info;
 274         uint64_t vuid; /* SMB2 compat */
 275         bool read_only;
 276 };
 277
 278 struct vuid_cache {
 279         unsigned int next_entry;
 280         struct vuid_cache_entry array[VUID_CACHE_SIZE];
 281 };
 282
 283 typedef struct {
 284         char *name;
 285         bool is_wild;
 286 } name_compare_entry;
 287
 288 struct dfree_cached_info {
 289         time_t last_dfree_time;
 290         uint64_t dfree_ret;
 291         uint64_t bsize;
 292         uint64_t dfree;
 293         uint64_t dsize;
 294 };
 295
 296 struct share_params {
 297         int service;
 298 };
 299
 300 typedef struct connection_struct {
 301         struct connection_struct *next, *prev;
 302         struct smbd_server_connection *sconn; /* can be NULL */
 303         struct smbXsrv_tcon *tcon; /* can be NULL */
 304         uint32_t cnum; /* an index passed over the wire */
 305         struct share_params *params;
 306         bool force_user;
 307         struct vuid_cache vuid_cache;
 308         bool printer;
 309         bool ipc;
 310         bool read_only; /* Attributes for the current user of the share. */
 311         uint32_t share_access;
 312         /* Does this filesystem honor
 313            sub second timestamps on files
 314            and directories when setting time ? */
 315         enum timestamp_set_resolution ts_res;
 316         char *connectpath;
 317         char *origpath;
 318
 319         struct vfs_handle_struct *vfs_handles;          /* for the new plugins */
 320
 321         /*
 322          * This represents the user information on this connection. Depending
 323          * on the vuid using this tid, this might change per SMB request.
 324          */
 325         struct auth_session_info *session_info;
 326
 327         /*
 328          * If the "force group" parameter is set, this is the primary gid that
 329          * may be used in the users token, depending on the vuid using this tid.
 330          */
 331         gid_t force_group_gid;
 332
 333         uint64_t vuid; /* vuid of user who *opened* this connection, or UID_FIELD_INVALID */
 334
 335         time_t lastused;
 336         time_t lastused_count;
 337         int num_files_open;
 338         unsigned int num_smb_operations; /* Count of smb operations on this tree. */
 339         int encrypt_level;
 340         bool encrypted_tid;
 341
 342         /* Semantics requested by the client or forced by the server config. */
 343         bool case_sensitive;
 344         bool case_preserve;
 345         bool short_case_preserve;
 346
 347         /* Semantics provided by the underlying filesystem. */
 348         int fs_capabilities;
 349         /* Device number of the directory of the share mount.
 350            Used to ensure unique FileIndex returns. */
 351         SMB_DEV_T base_share_dev;
 352
 353         name_compare_entry *hide_list; /* Per-share list of files to return as hidden. */
 354         name_compare_entry *veto_list; /* Per-share list of files to veto (never show). */
 355         name_compare_entry *veto_oplock_list; /* Per-share list of files to refuse oplocks on. */
 356         name_compare_entry *aio_write_behind_list; /* Per-share list of files to use aio write behind on. */
 357         struct dfree_cached_info *dfree_info;
 358         struct trans_state *pending_trans;
 359
 360         struct rpc_pipe_client *spoolss_pipe;
 361
 362 } connection_struct;
 363
 364 struct smbd_smb2_request;
 365 struct privilege_paths;
 366
 367 struct smb_request {
 368         uint8_t cmd;
 369         uint16 flags2;
 370         uint16 smbpid;
 371         uint64_t mid; /* For compatibility with SMB2. */
 372         uint32_t seqnum;
 373         uint64_t vuid; /* For compatibility with SMB2. */
 374         uint32_t tid;
 375         uint8  wct;
 376         const uint16_t *vwv;
 377         uint16_t buflen;
 378         const uint8_t *buf;
 379         const uint8 *inbuf;
 380
 381         /*
 382          * Async handling in the main smb processing loop is directed by
 383          * outbuf: reply_xxx routines indicate sync behaviour by putting their
 384          * reply into "outbuf". If they leave it as NULL, they take care of it
 385          * themselves, possibly later.
 386          *
 387          * If async handling is wanted, the reply_xxx routine must make sure
 388          * that it talloc_move()s the smb_req somewhere else.
 389          */
 390         uint8 *outbuf;
 391
 392         size_t unread_bytes;
 393         bool encrypted;
 394         connection_struct *conn;
 395         struct smbd_server_connection *sconn;
 396         struct smb_perfcount_data pcd;
 397
 398         /*
 399          * Chained request handling
 400          */
 401         struct files_struct *chain_fsp;
 402
 403         /*
 404          * state information for async smb handling
 405          */
 406         void *async_priv;
 407
 408         /*
 409          * Back pointer to smb2 request.
 410          */
 411         struct smbd_smb2_request *smb2req;
 412
 413         /*
 414          * Pathnames used if request done
 415          * under privilege.
 416          */
 417         struct privilege_paths *priv_paths;
 418
 419         /*
 420          * Request list for chained requests, we're part of it.
 421          */
 422         struct smb_request **chain;
 423
 424         struct timeval request_time;
 425 };
 426
 427 /*
 428  * Info about an alternate data stream
 429  */
 430
 431 struct stream_struct {
 432         off_t size;
 433         off_t alloc_size;
 434         char *name;
 435 };
 436
 437 /* time info */
 438 struct smb_file_time {
 439         struct timespec mtime;
 440         struct timespec atime;
 441         struct timespec ctime;
 442         struct timespec create_time;
 443 };
 444
 445 /*
 446  * smb_filename
 447  */
 448 struct smb_filename {
 449         char *base_name;
 450         char *stream_name;
 451         char *original_lcomp;
 452         SMB_STRUCT_STAT st;
 453 };
 454
 455 #define VFS_FIND(__fn__) while (handle->fns->__fn__##_fn==NULL) { \
 456                                 handle = handle->next; \
 457                          }
 458
 459 enum vfs_translate_direction {
 460         vfs_translate_to_unix = 0,
 461         vfs_translate_to_windows
 462 };
 463
 464 enum vfs_fallocate_mode {
 465         VFS_FALLOCATE_EXTEND_SIZE = 0,
 466         VFS_FALLOCATE_KEEP_SIZE = 1
 467 };
 468
 469 /*
 470     Available VFS operations. These values must be in sync with vfs_ops struct
 471     (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
 472     In particular, if new operations are added to vfs_ops, appropriate constants
 473     should be added to vfs_op_type so that order of them kept same as in vfs_ops.
 474 */
 475 struct shadow_copy_data;
 476
 477 struct vfs_fn_pointers {
 478         /* Disk operations */
 479
 480         int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
 481         void (*disconnect_fn)(struct vfs_handle_struct *handle);
 482         uint64_t (*disk_free_fn)(struct vfs_handle_struct *handle, const char *path, bool small_query, uint64_t *bsize,
 483                               uint64_t *dfree, uint64_t *dsize);
 484         int (*get_quota_fn)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
 485         int (*set_quota_fn)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
 486         int (*get_shadow_copy_data_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, struct shadow_copy_data *shadow_copy_data, bool labels);
 487         int (*statvfs_fn)(struct vfs_handle_struct *handle, const char *path, struct vfs_statvfs_struct *statbuf);
 488         uint32_t (*fs_capabilities_fn)(struct vfs_handle_struct *handle, enum timestamp_set_resolution *p_ts_res);
 489
 490         /*
 491          * Note: that "struct dfs_GetDFSReferral *r"
 492          * needs to be a valid TALLOC_CTX
 493          */
 494         NTSTATUS (*get_dfs_referrals_fn)(struct vfs_handle_struct *handle,
 495                                          struct dfs_GetDFSReferral *r);
 496
 497         /* Directory operations */
 498
 499         DIR *(*opendir_fn)(struct vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attributes);
 500         DIR *(*fdopendir_fn)(struct vfs_handle_struct *handle, files_struct *fsp, const char *mask, uint32 attributes);
 501         struct dirent *(*readdir_fn)(struct vfs_handle_struct *handle,
 502                                          DIR *dirp,
 503                                          SMB_STRUCT_STAT *sbuf);
 504         void (*seekdir_fn)(struct vfs_handle_struct *handle, DIR *dirp, long offset);
 505         long (*telldir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 506         void (*rewind_dir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 507         int (*mkdir_fn)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
 508         int (*rmdir_fn)(struct vfs_handle_struct *handle, const char *path);
 509         int (*closedir_fn)(struct vfs_handle_struct *handle, DIR *dir);
 510         void (*init_search_op_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 511
 512         /* File operations */
 513
 514         int (*open_fn)(struct vfs_handle_struct *handle,
 515                        struct smb_filename *smb_fname, files_struct *fsp,
 516                        int flags, mode_t mode);
 517         NTSTATUS (*create_file_fn)(struct vfs_handle_struct *handle,
 518                                    struct smb_request *req,
 519                                    uint16_t root_dir_fid,
 520                                    struct smb_filename *smb_fname,
 521                                    uint32_t access_mask,
 522                                    uint32_t share_access,
 523                                    uint32_t create_disposition,
 524                                    uint32_t create_options,
 525                                    uint32_t file_attributes,
 526                                    uint32_t oplock_request,
 527                                    uint64_t allocation_size,
 528                                    uint32_t private_flags,
 529                                    struct security_descriptor *sd,
 530                                    struct ea_list *ea_list,
 531                                    files_struct **result,
 532                                    int *pinfo);
 533         int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 534         ssize_t (*read_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n);
 535         ssize_t (*pread_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n, off_t offset);
 536         struct tevent_req *(*pread_send_fn)(struct vfs_handle_struct *handle,
 537                                             TALLOC_CTX *mem_ctx,
 538                                             struct tevent_context *ev,
 539                                             struct files_struct *fsp,
 540                                             void *data,
 541                                             size_t n, off_t offset);
 542         ssize_t (*pread_recv_fn)(struct tevent_req *req, int *err);
 543         ssize_t (*write_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n);
 544         ssize_t (*pwrite_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n, off_t offset);
 545         struct tevent_req *(*pwrite_send_fn)(struct vfs_handle_struct *handle,
 546                                              TALLOC_CTX *mem_ctx,
 547                                              struct tevent_context *ev,
 548                                              struct files_struct *fsp,
 549                                              const void *data,
 550                                              size_t n, off_t offset);
 551         ssize_t (*pwrite_recv_fn)(struct tevent_req *req, int *err);
 552         off_t (*lseek_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset, int whence);
 553         ssize_t (*sendfile_fn)(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *header, off_t offset, size_t count);
 554         ssize_t (*recvfile_fn)(struct vfs_handle_struct *handle, int fromfd, files_struct *tofsp, off_t offset, size_t count);
 555         int (*rename_fn)(struct vfs_handle_struct *handle,
 556                          const struct smb_filename *smb_fname_src,
 557                          const struct smb_filename *smb_fname_dst);
 558         int (*fsync_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 559         struct tevent_req *(*fsync_send_fn)(struct vfs_handle_struct *handle,
 560                                             TALLOC_CTX *mem_ctx,
 561                                             struct tevent_context *ev,
 562                                             struct files_struct *fsp);
 563         int (*fsync_recv_fn)(struct tevent_req *req, int *err);
 564         int (*stat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_fname);
 565         int (*fstat_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
 566         int (*lstat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_filename);
 567         uint64_t (*get_alloc_size_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_STAT *sbuf);
 568         int (*unlink_fn)(struct vfs_handle_struct *handle,
 569                          const struct smb_filename *smb_fname);
 570         int (*chmod_fn)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
 571         int (*fchmod_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
 572         int (*chown_fn)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
 573         int (*fchown_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, uid_t uid, gid_t gid);
 574         int (*lchown_fn)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
 575         int (*chdir_fn)(struct vfs_handle_struct *handle, const char *path);
 576         char *(*getwd_fn)(struct vfs_handle_struct *handle);
 577         int (*ntimes_fn)(struct vfs_handle_struct *handle,
 578                          const struct smb_filename *smb_fname,
 579                          struct smb_file_time *ft);
 580         int (*ftruncate_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset);
 581         int (*fallocate_fn)(struct vfs_handle_struct *handle,
 582                             struct files_struct *fsp,
 583                             enum vfs_fallocate_mode mode,
 584                             off_t offset,
 585                             off_t len);
 586         bool (*lock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, off_t offset, off_t count, int type);
 587         int (*kernel_flock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp,
 588                                uint32 share_mode, uint32_t access_mask);
 589         int (*linux_setlease_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int leasetype);
 590         bool (*getlock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid);
 591         int (*symlink_fn)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
 592         int (*readlink_fn)(struct vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz);
 593         int (*link_fn)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
 594         int (*mknod_fn)(struct vfs_handle_struct *handle, const char *path, mode_t mode, SMB_DEV_T dev);
 595         char *(*realpath_fn)(struct vfs_handle_struct *handle, const char *path);
 596         NTSTATUS (*notify_watch_fn)(struct vfs_handle_struct *handle,
 597                                     struct sys_notify_context *ctx,
 598                                     const char *path,
 599                                     uint32_t *filter,
 600                                     uint32_t *subdir_filter,
 601                                     void (*callback)(struct sys_notify_context *ctx,
 602                                                      void *private_data,
 603                                                      struct notify_event *ev),
 604                                     void *private_data,
 605                                     void *handle_p);
 606         int (*chflags_fn)(struct vfs_handle_struct *handle, const char *path, unsigned int flags);
 607         struct file_id (*file_id_create_fn)(struct vfs_handle_struct *handle,
 608                                             const SMB_STRUCT_STAT *sbuf);
 609
 610         NTSTATUS (*streaminfo_fn)(struct vfs_handle_struct *handle,
 611                                   struct files_struct *fsp,
 612                                   const char *fname,
 613                                   TALLOC_CTX *mem_ctx,
 614                                   unsigned int *num_streams,
 615                                   struct stream_struct **streams);
 616
 617         int (*get_real_filename_fn)(struct vfs_handle_struct *handle,
 618                                     const char *path,
 619                                     const char *name,
 620                                     TALLOC_CTX *mem_ctx,
 621                                     char **found_name);
 622
 623         const char *(*connectpath_fn)(struct vfs_handle_struct *handle,
 624                                       const char *filename);
 625
 626         NTSTATUS (*brl_lock_windows_fn)(struct vfs_handle_struct *handle,
 627                                         struct byte_range_lock *br_lck,
 628                                         struct lock_struct *plock,
 629                                         bool blocking_lock,
 630                                         struct blocking_lock_record *blr);
 631
 632         bool (*brl_unlock_windows_fn)(struct vfs_handle_struct *handle,
 633                                       struct messaging_context *msg_ctx,
 634                                       struct byte_range_lock *br_lck,
 635                                       const struct lock_struct *plock);
 636
 637         bool (*brl_cancel_windows_fn)(struct vfs_handle_struct *handle,
 638                                       struct byte_range_lock *br_lck,
 639                                       struct lock_struct *plock,
 640                                       struct blocking_lock_record *blr);
 641
 642         bool (*strict_lock_fn)(struct vfs_handle_struct *handle,
 643                                struct files_struct *fsp,
 644                                struct lock_struct *plock);
 645
 646         void (*strict_unlock_fn)(struct vfs_handle_struct *handle,
 647                                  struct files_struct *fsp,
 648                                  struct lock_struct *plock);
 649
 650         NTSTATUS (*translate_name_fn)(struct vfs_handle_struct *handle,
 651                                       const char *name,
 652                                       enum vfs_translate_direction direction,
 653                                       TALLOC_CTX *mem_ctx,
 654                                       char **mapped_name);
 655
 656         NTSTATUS (*fsctl_fn)(struct vfs_handle_struct *handle,
 657                              struct files_struct *fsp,
 658                              TALLOC_CTX *ctx,
 659                              uint32_t function,
 660                              uint16_t req_flags,
 661                              const uint8_t *_in_data,
 662                              uint32_t in_len,
 663                              uint8_t **_out_data,
 664                              uint32_t max_out_len,
 665                              uint32_t *out_len);
 666
 667         /* NT ACL operations. */
 668
 669         NTSTATUS (*fget_nt_acl_fn)(struct vfs_handle_struct *handle,
 670                                    struct files_struct *fsp,
 671                                    uint32 security_info,
 672                                    struct security_descriptor **ppdesc);
 673         NTSTATUS (*get_nt_acl_fn)(struct vfs_handle_struct *handle,
 674                                   const char *name,
 675                                   uint32 security_info,
 676                                   struct security_descriptor **ppdesc);
 677         NTSTATUS (*fset_nt_acl_fn)(struct vfs_handle_struct *handle,
 678                                    struct files_struct *fsp,
 679                                    uint32 security_info_sent,
 680                                    const struct security_descriptor *psd);
 681
 682         NTSTATUS (*audit_file_fn)(struct vfs_handle_struct *handle,
 683                                   struct smb_filename *file,
 684                                   struct security_acl *sacl,
 685                                   uint32_t access_requested,
 686                                   uint32_t access_denied);
 687
 688         /* POSIX ACL operations. */
 689
 690         int (*chmod_acl_fn)(struct vfs_handle_struct *handle, const char *name, mode_t mode);
 691         int (*fchmod_acl_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
 692
 693         SMB_ACL_T (*sys_acl_get_file_fn)(struct vfs_handle_struct *handle, const char *path_p, SMB_ACL_TYPE_T type);
 694         SMB_ACL_T (*sys_acl_get_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 695         int (*sys_acl_blob_get_file_fn)(struct vfs_handle_struct *handle, const char *path_p, SMB_ACL_TYPE_T type,
 696                                         TALLOC_CTX *mem_ctx, char **blob_description,
 697                                         DATA_BLOB *blob);
 698         int (*sys_acl_blob_get_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp,
 699                                       TALLOC_CTX *mem_ctx, char **blob_description,
 700                                       DATA_BLOB *blob);
 701         int (*sys_acl_set_file_fn)(struct vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
 702         int (*sys_acl_set_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_ACL_T theacl);
 703         int (*sys_acl_delete_def_file_fn)(struct vfs_handle_struct *handle, const char *path);
 704
 705         /* EA operations. */
 706         ssize_t (*getxattr_fn)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
 707         ssize_t (*fgetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size);
 708         ssize_t (*listxattr_fn)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
 709         ssize_t (*flistxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size);
 710         int (*removexattr_fn)(struct vfs_handle_struct *handle, const char *path, const char *name);
 711         int (*fremovexattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name);
 712         int (*setxattr_fn)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
 713         int (*fsetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags);
 714
 715         /* aio operations */
 716         bool (*aio_force_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 717
 718         /* offline operations */
 719         bool (*is_offline_fn)(struct vfs_handle_struct *handle,
 720                            const struct smb_filename *fname,
 721                            SMB_STRUCT_STAT *sbuf);
 722         int (*set_offline_fn)(struct vfs_handle_struct *handle,
 723                            const struct smb_filename *fname);
 724
 725         /* durable handle operations */
 726         NTSTATUS (*durable_cookie_fn)(struct vfs_handle_struct *handle,
 727                                       struct files_struct *fsp,
 728                                       TALLOC_CTX *mem_ctx,
 729                                       DATA_BLOB *cookie);
 730         NTSTATUS (*durable_disconnect_fn)(struct vfs_handle_struct *handle,
 731                                           struct files_struct *fsp,
 732                                           const DATA_BLOB old_cookie,
 733                                           TALLOC_CTX *mem_ctx,
 734                                           DATA_BLOB *new_cookie);
 735         NTSTATUS (*durable_reconnect_fn)(struct vfs_handle_struct *handle,
 736                                          struct smb_request *smb1req,
 737                                          struct smbXsrv_open *op,
 738                                          const DATA_BLOB old_cookie,
 739                                          TALLOC_CTX *mem_ctx,
 740                                          struct files_struct **fsp,
 741                                          DATA_BLOB *new_cookie);
 742 };
 743
 744 /*
 745     VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
 746     which describes all operations this module is willing to intercept.
 747     VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
 748     using this information.
 749 */
 750
 751 typedef struct vfs_handle_struct {
 752         struct vfs_handle_struct  *next, *prev;
 753         const char *param;
 754         struct connection_struct *conn;
 755         const struct vfs_fn_pointers *fns;
 756         void *data;
 757         void (*free_data)(void **data);
 758 } vfs_handle_struct;
 759
 760
 761 typedef struct vfs_statvfs_struct {
 762         /* For undefined recommended transfer size return -1 in that field */
 763         uint32 OptimalTransferSize;  /* bsize on some os, iosize on other os */
 764         uint32 BlockSize;
 765
 766         /*
 767          The next three fields are in terms of the block size.
 768          (above). If block size is unknown, 4096 would be a
 769          reasonable block size for a server to report.
 770          Note that returning the blocks/blocksavail removes need
 771          to make a second call (to QFSInfo level 0x103 to get this info.
 772          UserBlockAvail is typically less than or equal to BlocksAvail,
 773          if no distinction is made return the same value in each.
 774         */
 775
 776         uint64_t TotalBlocks;
 777         uint64_t BlocksAvail;       /* bfree */
 778         uint64_t UserBlocksAvail;   /* bavail */
 779
 780         /* For undefined Node fields or FSID return -1 */
 781         uint64_t TotalFileNodes;
 782         uint64_t FreeFileNodes;
 783         uint64_t FsIdentifier;   /* fsid */
 784         /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
 785         /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call   */
 786
 787         int FsCapabilities;
 788 } vfs_statvfs_struct;
 789
 790 /* Add a new FSP extension of the given type. Returns a pointer to the
 791  * extenstion data.
 792  */
 793 #define VFS_ADD_FSP_EXTENSION(handle, fsp, type, destroy_fn)            \
 794     vfs_add_fsp_extension_notype(handle, (fsp), sizeof(type), (destroy_fn))
 795
 796 /* Return a pointer to the existing FSP extension data. */
 797 #define VFS_FETCH_FSP_EXTENSION(handle, fsp) \
 798     vfs_fetch_fsp_extension(handle, (fsp))
 799
 800 /* Return the talloc context associated with an FSP extension. */
 801 #define VFS_MEMCTX_FSP_EXTENSION(handle, fsp) \
 802     vfs_memctx_fsp_extension(handle, (fsp))
 803
 804 /* Remove and destroy an FSP extension. */
 805 #define VFS_REMOVE_FSP_EXTENSION(handle, fsp) \
 806     vfs_remove_fsp_extension((handle), (fsp))
 807
 808 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
 809         if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
 810                 DEBUG(0,("%s() failed to get vfs_handle->data!\n",__FUNCTION__)); \
 811                 ret; \
 812         } \
 813 }
 814
 815 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
 816         if (!(handle)) { \
 817                 DEBUG(0,("%s() failed to set handle->data!\n",__FUNCTION__)); \
 818                 ret; \
 819         } else { \
 820                 if ((handle)->free_data) { \
 821                         (handle)->free_data(&(handle)->data); \
 822                 } \
 823                 (handle)->data = (void *)datap; \
 824                 (handle)->free_data = free_fn; \
 825         } \
 826 }
 827
 828 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
 829         if ((handle) && (handle)->free_data) { \
 830                 (handle)->free_data(&(handle)->data); \
 831         } \
 832 }
 833
 834 /* Check whether module-specific data handle was already allocated or not */
 835 #define SMB_VFS_HANDLE_TEST_DATA(handle)  ( !(handle) || !(handle)->data ? False : True )
 836
 837 #define SMB_VFS_OP(x) ((void *) x)
 838
 839 #define DEFAULT_VFS_MODULE_NAME "/[Default VFS]/"
 840
 841 #include "vfs_macros.h"
 842
 843 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
 844                          const char *service, const char *user);
 845 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle);
 846 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
 847                                 const char *path, bool small_query,
 848                                 uint64_t *bsize, uint64_t *dfree,
 849                                 uint64_t *dsize);
 850 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
 851                            enum SMB_QUOTA_TYPE qtype, unid_t id,
 852                            SMB_DISK_QUOTA *qt);
 853 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
 854                            enum SMB_QUOTA_TYPE qtype, unid_t id,
 855                            SMB_DISK_QUOTA *qt);
 856 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
 857                                       struct files_struct *fsp,
 858                                       struct shadow_copy_data *shadow_copy_data,
 859                                       bool labels);
 860 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle, const char *path,
 861                          struct vfs_statvfs_struct *statbuf);
 862 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
 863                                       enum timestamp_set_resolution *p_ts_res);
 864 /*
 865  * Note: that "struct dfs_GetDFSReferral *r" needs to be a valid TALLOC_CTX
 866  */
 867 NTSTATUS smb_vfs_call_get_dfs_referrals(struct vfs_handle_struct *handle,
 868                                         struct dfs_GetDFSReferral *r);
 869 DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
 870                                      const char *fname, const char *mask,
 871                                      uint32 attributes);
 872 DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
 873                                         struct files_struct *fsp,
 874                                         const char *mask,
 875                                         uint32 attributes);
 876 struct dirent *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
 877                                         DIR *dirp,
 878                                         SMB_STRUCT_STAT *sbuf);
 879 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
 880                           DIR *dirp, long offset);
 881 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
 882                           DIR *dirp);
 883 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
 884                              DIR *dirp);
 885 int smb_vfs_call_mkdir(struct vfs_handle_struct *handle, const char *path,
 886                        mode_t mode);
 887 int smb_vfs_call_rmdir(struct vfs_handle_struct *handle, const char *path);
 888 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
 889                           DIR *dir);
 890 void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
 891                                  DIR *dirp);
 892 int smb_vfs_call_open(struct vfs_handle_struct *handle,
 893                       struct smb_filename *smb_fname, struct files_struct *fsp,
 894                       int flags, mode_t mode);
 895 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
 896                                   struct smb_request *req,
 897                                   uint16_t root_dir_fid,
 898                                   struct smb_filename *smb_fname,
 899                                   uint32_t access_mask,
 900                                   uint32_t share_access,
 901                                   uint32_t create_disposition,
 902                                   uint32_t create_options,
 903                                   uint32_t file_attributes,
 904                                   uint32_t oplock_request,
 905                                   uint64_t allocation_size,
 906                                   uint32_t private_flags,
 907                                   struct security_descriptor *sd,
 908                                   struct ea_list *ea_list,
 909                                   files_struct **result,
 910                                   int *pinfo);
 911 int smb_vfs_call_close(struct vfs_handle_struct *handle,
 912                        struct files_struct *fsp);
 913 ssize_t smb_vfs_call_read(struct vfs_handle_struct *handle,
 914                           struct files_struct *fsp, void *data, size_t n);
 915 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
 916                            struct files_struct *fsp, void *data, size_t n,
 917                            off_t offset);
 918 struct tevent_req *smb_vfs_call_pread_send(struct vfs_handle_struct *handle,
 919                                            TALLOC_CTX *mem_ctx,
 920                                            struct tevent_context *ev,
 921                                            struct files_struct *fsp,
 922                                            void *data,
 923                                            size_t n, off_t offset);
 924 ssize_t SMB_VFS_PREAD_RECV(struct tevent_req *req, int *perrno);
 925
 926 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
 927                            struct files_struct *fsp, const void *data,
 928                            size_t n);
 929 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
 930                             struct files_struct *fsp, const void *data,
 931                             size_t n, off_t offset);
 932 struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
 933                                             TALLOC_CTX *mem_ctx,
 934                                             struct tevent_context *ev,
 935                                             struct files_struct *fsp,
 936                                             const void *data,
 937                                             size_t n, off_t offset);
 938 ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req, int *perrno);
 939
 940 off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
 941                              struct files_struct *fsp, off_t offset,
 942                              int whence);
 943 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
 944                               files_struct *fromfsp, const DATA_BLOB *header,
 945                               off_t offset, size_t count);
 946 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
 947                               files_struct *tofsp, off_t offset,
 948                               size_t count);
 949 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
 950                         const struct smb_filename *smb_fname_src,
 951                         const struct smb_filename *smb_fname_dst);
 952 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
 953                        struct files_struct *fsp);
 954
 955 struct tevent_req *smb_vfs_call_fsync_send(struct vfs_handle_struct *handle,
 956                                            TALLOC_CTX *mem_ctx,
 957                                            struct tevent_context *ev,
 958                                            struct files_struct *fsp);
 959 int SMB_VFS_FSYNC_RECV(struct tevent_req *req, int *perrno);
 960
 961 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
 962                       struct smb_filename *smb_fname);
 963 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
 964                        struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
 965 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
 966                        struct smb_filename *smb_filename);
 967 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
 968                                      struct files_struct *fsp,
 969                                      const SMB_STRUCT_STAT *sbuf);
 970 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
 971                         const struct smb_filename *smb_fname);
 972 int smb_vfs_call_chmod(struct vfs_handle_struct *handle, const char *path,
 973                        mode_t mode);
 974 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
 975                         struct files_struct *fsp, mode_t mode);
 976 int smb_vfs_call_chown(struct vfs_handle_struct *handle, const char *path,
 977                        uid_t uid, gid_t gid);
 978 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
 979                         struct files_struct *fsp, uid_t uid, gid_t gid);
 980 int smb_vfs_call_lchown(struct vfs_handle_struct *handle, const char *path,
 981                         uid_t uid, gid_t gid);
 982 int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path);
 983 char *smb_vfs_call_getwd(struct vfs_handle_struct *handle);
 984 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
 985                         const struct smb_filename *smb_fname,
 986                         struct smb_file_time *ft);
 987 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
 988                            struct files_struct *fsp, off_t offset);
 989 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
 990                         struct files_struct *fsp,
 991                         enum vfs_fallocate_mode mode,
 992                         off_t offset,
 993                         off_t len);
 994 bool smb_vfs_call_lock(struct vfs_handle_struct *handle,
 995                        struct files_struct *fsp, int op, off_t offset,
 996                        off_t count, int type);
 997 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
 998                               struct files_struct *fsp, uint32 share_mode,
 999                               uint32_t access_mask);
1000 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
1001                                 struct files_struct *fsp, int leasetype);
1002 bool smb_vfs_call_getlock(struct vfs_handle_struct *handle,
1003                           struct files_struct *fsp, off_t *poffset,
1004                           off_t *pcount, int *ptype, pid_t *ppid);
1005 int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
1006                          const char *newpath);
1007 int smb_vfs_call_readlink(struct vfs_handle_struct *handle,
1008                           const char *path, char *buf, size_t bufsiz);
1009 int smb_vfs_call_link(struct vfs_handle_struct *handle, const char *oldpath,
1010                       const char *newpath);
1011 int smb_vfs_call_mknod(struct vfs_handle_struct *handle, const char *path,
1012                        mode_t mode, SMB_DEV_T dev);
1013 char *smb_vfs_call_realpath(struct vfs_handle_struct *handle, const char *path);
1014 NTSTATUS smb_vfs_call_notify_watch(struct vfs_handle_struct *handle,
1015                                    struct sys_notify_context *ctx,
1016                                    const char *name,
1017                                    uint32_t *filter,
1018                                    uint32_t *subdir_filter,
1019                                    void (*callback)(struct sys_notify_context *ctx,
1020                                                     void *private_data,
1021                                                     struct notify_event *ev),
1022                                    void *private_data, void *handle_p);
1023 int smb_vfs_call_chflags(struct vfs_handle_struct *handle, const char *path,
1024                          unsigned int flags);
1025 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
1026                                            const SMB_STRUCT_STAT *sbuf);
1027 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
1028                                  struct files_struct *fsp,
1029                                  const char *fname,
1030                                  TALLOC_CTX *mem_ctx,
1031                                  unsigned int *num_streams,
1032                                  struct stream_struct **streams);
1033 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
1034                                    const char *path, const char *name,
1035                                    TALLOC_CTX *mem_ctx, char **found_name);
1036 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
1037                                      const char *filename);
1038 NTSTATUS smb_vfs_call_brl_lock_windows(struct vfs_handle_struct *handle,
1039                                        struct byte_range_lock *br_lck,
1040                                        struct lock_struct *plock,
1041                                        bool blocking_lock,
1042                                        struct blocking_lock_record *blr);
1043 bool smb_vfs_call_brl_unlock_windows(struct vfs_handle_struct *handle,
1044                                      struct messaging_context *msg_ctx,
1045                                      struct byte_range_lock *br_lck,
1046                                      const struct lock_struct *plock);
1047 bool smb_vfs_call_brl_cancel_windows(struct vfs_handle_struct *handle,
1048                                      struct byte_range_lock *br_lck,
1049                                      struct lock_struct *plock,
1050                                      struct blocking_lock_record *blr);
1051 bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
1052                               struct files_struct *fsp,
1053                               struct lock_struct *plock);
1054 void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
1055                                 struct files_struct *fsp,
1056                                 struct lock_struct *plock);
1057 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
1058                                      const char *name,
1059                                      enum vfs_translate_direction direction,
1060                                      TALLOC_CTX *mem_ctx,
1061                                      char **mapped_name);
1062 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
1063                             struct files_struct *fsp,
1064                             TALLOC_CTX *ctx,
1065                             uint32_t function,
1066                             uint16_t req_flags,
1067                             const uint8_t *_in_data,
1068                             uint32_t in_len,
1069                             uint8_t **_out_data,
1070                             uint32_t max_out_len,
1071                             uint32_t *out_len);
1072 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
1073                                   struct files_struct *fsp,
1074                                   uint32 security_info,
1075                                   struct security_descriptor **ppdesc);
1076 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
1077                                  const char *name,
1078                                  uint32 security_info,
1079                                  struct security_descriptor **ppdesc);
1080 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
1081                                   struct files_struct *fsp,
1082                                   uint32 security_info_sent,
1083                                   const struct security_descriptor *psd);
1084 NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
1085                                  struct smb_filename *file,
1086                                  struct security_acl *sacl,
1087                                  uint32_t access_requested,
1088                                  uint32_t access_denied);
1089 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle, const char *name,
1090                            mode_t mode);
1091 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
1092                             struct files_struct *fsp, mode_t mode);
1093 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
1094                                         const char *path_p,
1095                                         SMB_ACL_TYPE_T type);
1096 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
1097                                       struct files_struct *fsp);
1098 int smb_vfs_call_sys_acl_blob_get_file(struct vfs_handle_struct *handle,
1099                                        const char *path_p,
1100                                        SMB_ACL_TYPE_T type,
1101                                        TALLOC_CTX *mem_ctx,
1102                                        char **blob_description,
1103                                        DATA_BLOB *blob);
1104 int smb_vfs_call_sys_acl_blob_get_fd(struct vfs_handle_struct *handle,
1105                                      struct files_struct *fsp,
1106                                      TALLOC_CTX *mem_ctx,
1107                                      char **blob_description,
1108                                      DATA_BLOB *blob);
1109 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
1110                                   const char *name, SMB_ACL_TYPE_T acltype,
1111                                   SMB_ACL_T theacl);
1112 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
1113                                 struct files_struct *fsp, SMB_ACL_T theacl);
1114 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1115                                          const char *path);
1116 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
1117                               const char *path, const char *name, void *value,
1118                               size_t size);
1119 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
1120                                struct files_struct *fsp, const char *name,
1121                                void *value, size_t size);
1122 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
1123                                const char *path, char *list, size_t size);
1124 ssize_t smb_vfs_call_llistxattr(struct vfs_handle_struct *handle,
1125                                 const char *path, char *list, size_t size);
1126 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
1127                                 struct files_struct *fsp, char *list,
1128                                 size_t size);
1129 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
1130                              const char *path, const char *name);
1131 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
1132                               struct files_struct *fsp, const char *name);
1133 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle, const char *path,
1134                           const char *name, const void *value, size_t size,
1135                           int flags);
1136 int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
1137                            const char *name, const void *value, size_t size,
1138                            int flags);
1139 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
1140                            struct files_struct *fsp, const char *name,
1141                            const void *value, size_t size, int flags);
1142 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
1143                             struct files_struct *fsp);
1144 bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
1145                              const struct smb_filename *fname,
1146                              SMB_STRUCT_STAT *sbuf);
1147 int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
1148                              const struct smb_filename *fname);
1149 NTSTATUS smb_vfs_call_durable_cookie(struct vfs_handle_struct *handle,
1150                                      struct files_struct *fsp,
1151                                      TALLOC_CTX *mem_ctx,
1152                                      DATA_BLOB *cookie);
1153 NTSTATUS smb_vfs_call_durable_disconnect(struct vfs_handle_struct *handle,
1154                                          struct files_struct *fsp,
1155                                          const DATA_BLOB old_cookie,
1156                                          TALLOC_CTX *mem_ctx,
1157                                          DATA_BLOB *new_cookie);
1158 NTSTATUS smb_vfs_call_durable_reconnect(struct vfs_handle_struct *handle,
1159                                         struct smb_request *smb1req,
1160                                         struct smbXsrv_open *op,
1161                                         const DATA_BLOB old_cookie,
1162                                         TALLOC_CTX *mem_ctx,
1163                                         struct files_struct **fsp,
1164                                         DATA_BLOB *new_cookie);
1165
1166 NTSTATUS smb_register_vfs(int version, const char *name,
1167                           const struct vfs_fn_pointers *fns);
1168 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
1169                                    files_struct *fsp, size_t ext_size,
1170                                    void (*destroy_fn)(void *p_data));
1171 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1172 void vfs_remove_all_fsp_extensions(struct files_struct *fsp);
1173 void *vfs_memctx_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1174 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1175
1176 #endif /* _VFS_H */