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 #define SMB_VFS_INTERFACE_VERSION 29
 145
 146 /*
 147     All intercepted VFS operations must be declared as static functions inside module source
 148     in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
 149     example VFS modules for more details.
 150 */
 151
 152 /* VFS operations structure */
 153
 154 struct vfs_handle_struct;
 155 struct connection_struct;
 156 struct files_struct;
 157 struct security_descriptor;
 158 struct vfs_statvfs_struct;
 159 struct smb_request;
 160 struct ea_list;
 161 struct smb_file_time;
 162 struct blocking_lock_record;
 163 struct smb_filename;
 164 struct dfs_GetDFSReferral;
 165
 166 typedef union unid_t {
 167         uid_t uid;
 168         gid_t gid;
 169 } unid_t;
 170
 171 struct fd_handle {
 172         size_t ref_count;
 173         int fd;
 174         uint64_t position_information;
 175         off_t pos;
 176         uint32 private_options; /* NT Create options, but we only look at
 177                                  * NTCREATEX_OPTIONS_PRIVATE_DENY_DOS and
 178                                  * NTCREATEX_OPTIONS_PRIVATE_DENY_FCB and
 179                                  * NTCREATEX_OPTIONS_PRIVATE_DELETE_ON_CLOSE
 180                                  * for print files *only*, where
 181                                  * DELETE_ON_CLOSE is not stored in the share
 182                                  * mode database.
 183                                  */
 184         unsigned long gen_id;
 185 };
 186
 187 typedef struct files_struct {
 188         struct files_struct *next, *prev;
 189         uint64_t fnum;
 190         struct smbXsrv_open *op;
 191         struct connection_struct *conn;
 192         struct fd_handle *fh;
 193         unsigned int num_smb_operations;
 194         struct file_id file_id;
 195         uint64_t initial_allocation_size; /* Faked up initial allocation on disk. */
 196         uint16 file_pid;
 197         uint64_t vuid; /* SMB2 compat */
 198         struct write_cache *wcp;
 199         struct timeval open_time;
 200         uint32 access_mask;             /* NTCreateX access bits (FILE_READ_DATA etc.) */
 201         uint32 share_access;            /* NTCreateX share constants (FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE). */
 202
 203         bool update_write_time_triggered;
 204         struct timed_event *update_write_time_event;
 205         bool update_write_time_on_close;
 206         struct timespec close_write_time;
 207         bool write_time_forced;
 208
 209         int oplock_type;
 210         int sent_oplock_break;
 211         struct timed_event *oplock_timeout;
 212         struct lock_struct last_lock_failure;
 213         int current_lock_count; /* Count the number of outstanding locks and pending locks. */
 214
 215         struct share_mode_entry *pending_break_messages;
 216         int num_pending_break_messages;
 217
 218         bool can_lock;
 219         bool can_read;
 220         bool can_write;
 221         bool modified;
 222         bool is_directory;
 223         bool aio_write_behind;
 224         bool lockdb_clean;
 225         bool initial_delete_on_close; /* Only set at NTCreateX if file was created. */
 226         bool delete_on_close;
 227         bool posix_open;
 228         bool is_sparse;
 229         struct smb_filename *fsp_name;
 230         uint32_t name_hash;             /* Jenkins hash of full pathname. */
 231         uint64_t mid;                   /* Mid of the operation that created us. */
 232
 233         struct vfs_fsp_data *vfs_extension;
 234         struct fake_file_handle *fake_file_handle;
 235
 236         struct notify_change_buf *notify;
 237
 238         struct files_struct *base_fsp; /* placeholder for delete on close */
 239
 240         /*
 241          * Read-only cached brlock record, thrown away when the
 242          * brlock.tdb seqnum changes. This avoids fetching data from
 243          * the brlock.tdb on every read/write call.
 244          */
 245         int brlock_seqnum;
 246         struct byte_range_lock *brlock_rec;
 247
 248         struct dptr_struct *dptr;
 249
 250         /* if not NULL, means this is a print file */
 251         struct print_file_data *print_file;
 252
 253         unsigned num_aio_requests;
 254         struct tevent_req **aio_requests;
 255
 256         /*
 257          * If a close request comes in while we still have aio_requests
 258          * around, we need to hold back the close. When all aio_requests are
 259          * done, the aio completion routines need tevent_wait_done() on
 260          * this. A bit ugly, but before we have close_file() fully async
 261          * possibly the simplest approach. Thanks, Jeremy for the idea.
 262          */
 263         struct tevent_req *deferred_close;
 264 } files_struct;
 265
 266 struct vuid_cache_entry {
 267         struct auth_session_info *session_info;
 268         uint64_t vuid; /* SMB2 compat */
 269         bool read_only;
 270 };
 271
 272 struct vuid_cache {
 273         unsigned int next_entry;
 274         struct vuid_cache_entry array[VUID_CACHE_SIZE];
 275 };
 276
 277 typedef struct {
 278         char *name;
 279         bool is_wild;
 280 } name_compare_entry;
 281
 282 struct dfree_cached_info {
 283         time_t last_dfree_time;
 284         uint64_t dfree_ret;
 285         uint64_t bsize;
 286         uint64_t dfree;
 287         uint64_t dsize;
 288 };
 289
 290 struct share_params {
 291         int service;
 292 };
 293
 294 typedef struct connection_struct {
 295         struct connection_struct *next, *prev;
 296         struct smbd_server_connection *sconn; /* can be NULL */
 297         struct smbXsrv_tcon *tcon; /* can be NULL */
 298         uint32_t cnum; /* an index passed over the wire */
 299         struct share_params *params;
 300         bool force_user;
 301         struct vuid_cache vuid_cache;
 302         bool printer;
 303         bool ipc;
 304         bool read_only; /* Attributes for the current user of the share. */
 305         uint32_t share_access;
 306         /* Does this filesystem honor
 307            sub second timestamps on files
 308            and directories when setting time ? */
 309         enum timestamp_set_resolution ts_res;
 310         char *connectpath;
 311         char *origpath;
 312
 313         struct vfs_handle_struct *vfs_handles;          /* for the new plugins */
 314
 315         /*
 316          * This represents the user information on this connection. Depending
 317          * on the vuid using this tid, this might change per SMB request.
 318          */
 319         struct auth_session_info *session_info;
 320
 321         /*
 322          * If the "force group" parameter is set, this is the primary gid that
 323          * may be used in the users token, depending on the vuid using this tid.
 324          */
 325         gid_t force_group_gid;
 326
 327         uint64_t vuid; /* vuid of user who *opened* this connection, or UID_FIELD_INVALID */
 328
 329         time_t lastused;
 330         time_t lastused_count;
 331         int num_files_open;
 332         unsigned int num_smb_operations; /* Count of smb operations on this tree. */
 333         int encrypt_level;
 334         bool encrypted_tid;
 335
 336         /* Semantics requested by the client or forced by the server config. */
 337         bool case_sensitive;
 338         bool case_preserve;
 339         bool short_case_preserve;
 340
 341         /* Semantics provided by the underlying filesystem. */
 342         int fs_capabilities;
 343         /* Device number of the directory of the share mount.
 344            Used to ensure unique FileIndex returns. */
 345         SMB_DEV_T base_share_dev;
 346
 347         name_compare_entry *hide_list; /* Per-share list of files to return as hidden. */
 348         name_compare_entry *veto_list; /* Per-share list of files to veto (never show). */
 349         name_compare_entry *veto_oplock_list; /* Per-share list of files to refuse oplocks on. */
 350         name_compare_entry *aio_write_behind_list; /* Per-share list of files to use aio write behind on. */
 351         struct dfree_cached_info *dfree_info;
 352         struct trans_state *pending_trans;
 353
 354         struct rpc_pipe_client *spoolss_pipe;
 355
 356 } connection_struct;
 357
 358 struct smbd_smb2_request;
 359 struct privilege_paths;
 360
 361 struct smb_request {
 362         uint8_t cmd;
 363         uint16 flags2;
 364         uint16 smbpid;
 365         uint64_t mid; /* For compatibility with SMB2. */
 366         uint32_t seqnum;
 367         uint64_t vuid; /* For compatibility with SMB2. */
 368         uint32_t tid;
 369         uint8  wct;
 370         const uint16_t *vwv;
 371         uint16_t buflen;
 372         const uint8_t *buf;
 373         const uint8 *inbuf;
 374
 375         /*
 376          * Async handling in the main smb processing loop is directed by
 377          * outbuf: reply_xxx routines indicate sync behaviour by putting their
 378          * reply into "outbuf". If they leave it as NULL, they take care of it
 379          * themselves, possibly later.
 380          *
 381          * If async handling is wanted, the reply_xxx routine must make sure
 382          * that it talloc_move()s the smb_req somewhere else.
 383          */
 384         uint8 *outbuf;
 385
 386         size_t unread_bytes;
 387         bool encrypted;
 388         connection_struct *conn;
 389         struct smbd_server_connection *sconn;
 390         struct smb_perfcount_data pcd;
 391
 392         /*
 393          * Chained request handling
 394          */
 395         struct files_struct *chain_fsp;
 396
 397         /*
 398          * state information for async smb handling
 399          */
 400         void *async_priv;
 401
 402         /*
 403          * Back pointer to smb2 request.
 404          */
 405         struct smbd_smb2_request *smb2req;
 406
 407         /*
 408          * Pathnames used if request done
 409          * under privilege.
 410          */
 411         struct privilege_paths *priv_paths;
 412
 413         /*
 414          * Request list for chained requests, we're part of it.
 415          */
 416         struct smb_request **chain;
 417
 418         struct timeval request_time;
 419 };
 420
 421 /*
 422  * Info about an alternate data stream
 423  */
 424
 425 struct stream_struct {
 426         off_t size;
 427         off_t alloc_size;
 428         char *name;
 429 };
 430
 431 /* time info */
 432 struct smb_file_time {
 433         struct timespec mtime;
 434         struct timespec atime;
 435         struct timespec ctime;
 436         struct timespec create_time;
 437 };
 438
 439 /*
 440  * smb_filename
 441  */
 442 struct smb_filename {
 443         char *base_name;
 444         char *stream_name;
 445         char *original_lcomp;
 446         SMB_STRUCT_STAT st;
 447 };
 448
 449 #define VFS_FIND(__fn__) while (handle->fns->__fn__##_fn==NULL) { \
 450                                 handle = handle->next; \
 451                          }
 452
 453 enum vfs_translate_direction {
 454         vfs_translate_to_unix = 0,
 455         vfs_translate_to_windows
 456 };
 457
 458 enum vfs_fallocate_mode {
 459         VFS_FALLOCATE_EXTEND_SIZE = 0,
 460         VFS_FALLOCATE_KEEP_SIZE = 1
 461 };
 462
 463 /*
 464     Available VFS operations. These values must be in sync with vfs_ops struct
 465     (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
 466     In particular, if new operations are added to vfs_ops, appropriate constants
 467     should be added to vfs_op_type so that order of them kept same as in vfs_ops.
 468 */
 469 struct shadow_copy_data;
 470
 471 struct vfs_fn_pointers {
 472         /* Disk operations */
 473
 474         int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
 475         void (*disconnect_fn)(struct vfs_handle_struct *handle);
 476         uint64_t (*disk_free_fn)(struct vfs_handle_struct *handle, const char *path, bool small_query, uint64_t *bsize,
 477                               uint64_t *dfree, uint64_t *dsize);
 478         int (*get_quota_fn)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
 479         int (*set_quota_fn)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
 480         int (*get_shadow_copy_data_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, struct shadow_copy_data *shadow_copy_data, bool labels);
 481         int (*statvfs_fn)(struct vfs_handle_struct *handle, const char *path, struct vfs_statvfs_struct *statbuf);
 482         uint32_t (*fs_capabilities_fn)(struct vfs_handle_struct *handle, enum timestamp_set_resolution *p_ts_res);
 483
 484         /*
 485          * Note: that "struct dfs_GetDFSReferral *r"
 486          * needs to be a valid TALLOC_CTX
 487          */
 488         NTSTATUS (*get_dfs_referrals_fn)(struct vfs_handle_struct *handle,
 489                                          struct dfs_GetDFSReferral *r);
 490
 491         /* Directory operations */
 492
 493         DIR *(*opendir_fn)(struct vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attributes);
 494         DIR *(*fdopendir_fn)(struct vfs_handle_struct *handle, files_struct *fsp, const char *mask, uint32 attributes);
 495         struct dirent *(*readdir_fn)(struct vfs_handle_struct *handle,
 496                                          DIR *dirp,
 497                                          SMB_STRUCT_STAT *sbuf);
 498         void (*seekdir_fn)(struct vfs_handle_struct *handle, DIR *dirp, long offset);
 499         long (*telldir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 500         void (*rewind_dir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 501         int (*mkdir_fn)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
 502         int (*rmdir_fn)(struct vfs_handle_struct *handle, const char *path);
 503         int (*closedir_fn)(struct vfs_handle_struct *handle, DIR *dir);
 504         void (*init_search_op_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 505
 506         /* File operations */
 507
 508         int (*open_fn)(struct vfs_handle_struct *handle,
 509                        struct smb_filename *smb_fname, files_struct *fsp,
 510                        int flags, mode_t mode);
 511         NTSTATUS (*create_file_fn)(struct vfs_handle_struct *handle,
 512                                    struct smb_request *req,
 513                                    uint16_t root_dir_fid,
 514                                    struct smb_filename *smb_fname,
 515                                    uint32_t access_mask,
 516                                    uint32_t share_access,
 517                                    uint32_t create_disposition,
 518                                    uint32_t create_options,
 519                                    uint32_t file_attributes,
 520                                    uint32_t oplock_request,
 521                                    uint64_t allocation_size,
 522                                    uint32_t private_flags,
 523                                    struct security_descriptor *sd,
 524                                    struct ea_list *ea_list,
 525                                    files_struct **result,
 526                                    int *pinfo);
 527         int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 528         ssize_t (*read_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n);
 529         ssize_t (*pread_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n, off_t offset);
 530         struct tevent_req *(*pread_send_fn)(struct vfs_handle_struct *handle,
 531                                             TALLOC_CTX *mem_ctx,
 532                                             struct tevent_context *ev,
 533                                             struct files_struct *fsp,
 534                                             void *data,
 535                                             size_t n, off_t offset);
 536         ssize_t (*pread_recv_fn)(struct tevent_req *req, int *err);
 537         ssize_t (*write_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n);
 538         ssize_t (*pwrite_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n, off_t offset);
 539         struct tevent_req *(*pwrite_send_fn)(struct vfs_handle_struct *handle,
 540                                              TALLOC_CTX *mem_ctx,
 541                                              struct tevent_context *ev,
 542                                              struct files_struct *fsp,
 543                                              const void *data,
 544                                              size_t n, off_t offset);
 545         ssize_t (*pwrite_recv_fn)(struct tevent_req *req, int *err);
 546         off_t (*lseek_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset, int whence);
 547         ssize_t (*sendfile_fn)(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *header, off_t offset, size_t count);
 548         ssize_t (*recvfile_fn)(struct vfs_handle_struct *handle, int fromfd, files_struct *tofsp, off_t offset, size_t count);
 549         int (*rename_fn)(struct vfs_handle_struct *handle,
 550                          const struct smb_filename *smb_fname_src,
 551                          const struct smb_filename *smb_fname_dst);
 552         int (*fsync_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 553         struct tevent_req *(*fsync_send_fn)(struct vfs_handle_struct *handle,
 554                                             TALLOC_CTX *mem_ctx,
 555                                             struct tevent_context *ev,
 556                                             struct files_struct *fsp);
 557         int (*fsync_recv_fn)(struct tevent_req *req, int *err);
 558         int (*stat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_fname);
 559         int (*fstat_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
 560         int (*lstat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_filename);
 561         uint64_t (*get_alloc_size_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_STAT *sbuf);
 562         int (*unlink_fn)(struct vfs_handle_struct *handle,
 563                          const struct smb_filename *smb_fname);
 564         int (*chmod_fn)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
 565         int (*fchmod_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
 566         int (*chown_fn)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
 567         int (*fchown_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, uid_t uid, gid_t gid);
 568         int (*lchown_fn)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
 569         int (*chdir_fn)(struct vfs_handle_struct *handle, const char *path);
 570         char *(*getwd_fn)(struct vfs_handle_struct *handle);
 571         int (*ntimes_fn)(struct vfs_handle_struct *handle,
 572                          const struct smb_filename *smb_fname,
 573                          struct smb_file_time *ft);
 574         int (*ftruncate_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset);
 575         int (*fallocate_fn)(struct vfs_handle_struct *handle,
 576                             struct files_struct *fsp,
 577                             enum vfs_fallocate_mode mode,
 578                             off_t offset,
 579                             off_t len);
 580         bool (*lock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, off_t offset, off_t count, int type);
 581         int (*kernel_flock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp,
 582                                uint32 share_mode, uint32_t access_mask);
 583         int (*linux_setlease_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int leasetype);
 584         bool (*getlock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid);
 585         int (*symlink_fn)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
 586         int (*readlink_fn)(struct vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz);
 587         int (*link_fn)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
 588         int (*mknod_fn)(struct vfs_handle_struct *handle, const char *path, mode_t mode, SMB_DEV_T dev);
 589         char *(*realpath_fn)(struct vfs_handle_struct *handle, const char *path);
 590         NTSTATUS (*notify_watch_fn)(struct vfs_handle_struct *handle,
 591                                     struct sys_notify_context *ctx,
 592                                     const char *path,
 593                                     uint32_t *filter,
 594                                     uint32_t *subdir_filter,
 595                                     void (*callback)(struct sys_notify_context *ctx,
 596                                                      void *private_data,
 597                                                      struct notify_event *ev),
 598                                     void *private_data,
 599                                     void *handle_p);
 600         int (*chflags_fn)(struct vfs_handle_struct *handle, const char *path, unsigned int flags);
 601         struct file_id (*file_id_create_fn)(struct vfs_handle_struct *handle,
 602                                             const SMB_STRUCT_STAT *sbuf);
 603
 604         NTSTATUS (*streaminfo_fn)(struct vfs_handle_struct *handle,
 605                                   struct files_struct *fsp,
 606                                   const char *fname,
 607                                   TALLOC_CTX *mem_ctx,
 608                                   unsigned int *num_streams,
 609                                   struct stream_struct **streams);
 610
 611         int (*get_real_filename_fn)(struct vfs_handle_struct *handle,
 612                                     const char *path,
 613                                     const char *name,
 614                                     TALLOC_CTX *mem_ctx,
 615                                     char **found_name);
 616
 617         const char *(*connectpath_fn)(struct vfs_handle_struct *handle,
 618                                       const char *filename);
 619
 620         NTSTATUS (*brl_lock_windows_fn)(struct vfs_handle_struct *handle,
 621                                         struct byte_range_lock *br_lck,
 622                                         struct lock_struct *plock,
 623                                         bool blocking_lock,
 624                                         struct blocking_lock_record *blr);
 625
 626         bool (*brl_unlock_windows_fn)(struct vfs_handle_struct *handle,
 627                                       struct messaging_context *msg_ctx,
 628                                       struct byte_range_lock *br_lck,
 629                                       const struct lock_struct *plock);
 630
 631         bool (*brl_cancel_windows_fn)(struct vfs_handle_struct *handle,
 632                                       struct byte_range_lock *br_lck,
 633                                       struct lock_struct *plock,
 634                                       struct blocking_lock_record *blr);
 635
 636         bool (*strict_lock_fn)(struct vfs_handle_struct *handle,
 637                                struct files_struct *fsp,
 638                                struct lock_struct *plock);
 639
 640         void (*strict_unlock_fn)(struct vfs_handle_struct *handle,
 641                                  struct files_struct *fsp,
 642                                  struct lock_struct *plock);
 643
 644         NTSTATUS (*translate_name_fn)(struct vfs_handle_struct *handle,
 645                                       const char *name,
 646                                       enum vfs_translate_direction direction,
 647                                       TALLOC_CTX *mem_ctx,
 648                                       char **mapped_name);
 649
 650         NTSTATUS (*fsctl_fn)(struct vfs_handle_struct *handle,
 651                              struct files_struct *fsp,
 652                              TALLOC_CTX *ctx,
 653                              uint32_t function,
 654                              uint16_t req_flags,
 655                              const uint8_t *_in_data,
 656                              uint32_t in_len,
 657                              uint8_t **_out_data,
 658                              uint32_t max_out_len,
 659                              uint32_t *out_len);
 660
 661         /* NT ACL operations. */
 662
 663         NTSTATUS (*fget_nt_acl_fn)(struct vfs_handle_struct *handle,
 664                                    struct files_struct *fsp,
 665                                    uint32 security_info,
 666                                    struct security_descriptor **ppdesc);
 667         NTSTATUS (*get_nt_acl_fn)(struct vfs_handle_struct *handle,
 668                                   const char *name,
 669                                   uint32 security_info,
 670                                   struct security_descriptor **ppdesc);
 671         NTSTATUS (*fset_nt_acl_fn)(struct vfs_handle_struct *handle,
 672                                    struct files_struct *fsp,
 673                                    uint32 security_info_sent,
 674                                    const struct security_descriptor *psd);
 675
 676         NTSTATUS (*audit_file_fn)(struct vfs_handle_struct *handle,
 677                                   struct smb_filename *file,
 678                                   struct security_acl *sacl,
 679                                   uint32_t access_requested,
 680                                   uint32_t access_denied);
 681
 682         /* POSIX ACL operations. */
 683
 684         int (*chmod_acl_fn)(struct vfs_handle_struct *handle, const char *name, mode_t mode);
 685         int (*fchmod_acl_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
 686
 687         SMB_ACL_T (*sys_acl_get_file_fn)(struct vfs_handle_struct *handle, const char *path_p, SMB_ACL_TYPE_T type);
 688         SMB_ACL_T (*sys_acl_get_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 689         int (*sys_acl_set_file_fn)(struct vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
 690         int (*sys_acl_set_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_ACL_T theacl);
 691         int (*sys_acl_delete_def_file_fn)(struct vfs_handle_struct *handle, const char *path);
 692
 693         /* EA operations. */
 694         ssize_t (*getxattr_fn)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
 695         ssize_t (*fgetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size);
 696         ssize_t (*listxattr_fn)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
 697         ssize_t (*flistxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size);
 698         int (*removexattr_fn)(struct vfs_handle_struct *handle, const char *path, const char *name);
 699         int (*fremovexattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name);
 700         int (*setxattr_fn)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
 701         int (*fsetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags);
 702
 703         /* aio operations */
 704         bool (*aio_force_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 705
 706         /* offline operations */
 707         bool (*is_offline_fn)(struct vfs_handle_struct *handle,
 708                            const struct smb_filename *fname,
 709                            SMB_STRUCT_STAT *sbuf);
 710         int (*set_offline_fn)(struct vfs_handle_struct *handle,
 711                            const struct smb_filename *fname);
 712 };
 713
 714 /*
 715     VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
 716     which describes all operations this module is willing to intercept.
 717     VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
 718     using this information.
 719 */
 720
 721 typedef struct vfs_handle_struct {
 722         struct vfs_handle_struct  *next, *prev;
 723         const char *param;
 724         struct connection_struct *conn;
 725         const struct vfs_fn_pointers *fns;
 726         void *data;
 727         void (*free_data)(void **data);
 728 } vfs_handle_struct;
 729
 730
 731 typedef struct vfs_statvfs_struct {
 732         /* For undefined recommended transfer size return -1 in that field */
 733         uint32 OptimalTransferSize;  /* bsize on some os, iosize on other os */
 734         uint32 BlockSize;
 735
 736         /*
 737          The next three fields are in terms of the block size.
 738          (above). If block size is unknown, 4096 would be a
 739          reasonable block size for a server to report.
 740          Note that returning the blocks/blocksavail removes need
 741          to make a second call (to QFSInfo level 0x103 to get this info.
 742          UserBlockAvail is typically less than or equal to BlocksAvail,
 743          if no distinction is made return the same value in each.
 744         */
 745
 746         uint64_t TotalBlocks;
 747         uint64_t BlocksAvail;       /* bfree */
 748         uint64_t UserBlocksAvail;   /* bavail */
 749
 750         /* For undefined Node fields or FSID return -1 */
 751         uint64_t TotalFileNodes;
 752         uint64_t FreeFileNodes;
 753         uint64_t FsIdentifier;   /* fsid */
 754         /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
 755         /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call   */
 756
 757         int FsCapabilities;
 758 } vfs_statvfs_struct;
 759
 760 /* Add a new FSP extension of the given type. Returns a pointer to the
 761  * extenstion data.
 762  */
 763 #define VFS_ADD_FSP_EXTENSION(handle, fsp, type, destroy_fn)            \
 764     vfs_add_fsp_extension_notype(handle, (fsp), sizeof(type), (destroy_fn))
 765
 766 /* Return a pointer to the existing FSP extension data. */
 767 #define VFS_FETCH_FSP_EXTENSION(handle, fsp) \
 768     vfs_fetch_fsp_extension(handle, (fsp))
 769
 770 /* Return the talloc context associated with an FSP extension. */
 771 #define VFS_MEMCTX_FSP_EXTENSION(handle, fsp) \
 772     vfs_memctx_fsp_extension(handle, (fsp))
 773
 774 /* Remove and destroy an FSP extension. */
 775 #define VFS_REMOVE_FSP_EXTENSION(handle, fsp) \
 776     vfs_remove_fsp_extension((handle), (fsp))
 777
 778 #define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
 779         if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
 780                 DEBUG(0,("%s() failed to get vfs_handle->data!\n",__FUNCTION__)); \
 781                 ret; \
 782         } \
 783 }
 784
 785 #define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
 786         if (!(handle)) { \
 787                 DEBUG(0,("%s() failed to set handle->data!\n",__FUNCTION__)); \
 788                 ret; \
 789         } else { \
 790                 if ((handle)->free_data) { \
 791                         (handle)->free_data(&(handle)->data); \
 792                 } \
 793                 (handle)->data = (void *)datap; \
 794                 (handle)->free_data = free_fn; \
 795         } \
 796 }
 797
 798 #define SMB_VFS_HANDLE_FREE_DATA(handle) { \
 799         if ((handle) && (handle)->free_data) { \
 800                 (handle)->free_data(&(handle)->data); \
 801         } \
 802 }
 803
 804 /* Check whether module-specific data handle was already allocated or not */
 805 #define SMB_VFS_HANDLE_TEST_DATA(handle)  ( !(handle) || !(handle)->data ? False : True )
 806
 807 #define SMB_VFS_OP(x) ((void *) x)
 808
 809 #define DEFAULT_VFS_MODULE_NAME "/[Default VFS]/"
 810
 811 #include "vfs_macros.h"
 812
 813 int smb_vfs_call_connect(struct vfs_handle_struct *handle,
 814                          const char *service, const char *user);
 815 void smb_vfs_call_disconnect(struct vfs_handle_struct *handle);
 816 uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
 817                                 const char *path, bool small_query,
 818                                 uint64_t *bsize, uint64_t *dfree,
 819                                 uint64_t *dsize);
 820 int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
 821                            enum SMB_QUOTA_TYPE qtype, unid_t id,
 822                            SMB_DISK_QUOTA *qt);
 823 int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
 824                            enum SMB_QUOTA_TYPE qtype, unid_t id,
 825                            SMB_DISK_QUOTA *qt);
 826 int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
 827                                       struct files_struct *fsp,
 828                                       struct shadow_copy_data *shadow_copy_data,
 829                                       bool labels);
 830 int smb_vfs_call_statvfs(struct vfs_handle_struct *handle, const char *path,
 831                          struct vfs_statvfs_struct *statbuf);
 832 uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
 833                                       enum timestamp_set_resolution *p_ts_res);
 834 /*
 835  * Note: that "struct dfs_GetDFSReferral *r" needs to be a valid TALLOC_CTX
 836  */
 837 NTSTATUS smb_vfs_call_get_dfs_referrals(struct vfs_handle_struct *handle,
 838                                         struct dfs_GetDFSReferral *r);
 839 DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
 840                                      const char *fname, const char *mask,
 841                                      uint32 attributes);
 842 DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
 843                                         struct files_struct *fsp,
 844                                         const char *mask,
 845                                         uint32 attributes);
 846 struct dirent *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
 847                                         DIR *dirp,
 848                                         SMB_STRUCT_STAT *sbuf);
 849 void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
 850                           DIR *dirp, long offset);
 851 long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
 852                           DIR *dirp);
 853 void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
 854                              DIR *dirp);
 855 int smb_vfs_call_mkdir(struct vfs_handle_struct *handle, const char *path,
 856                        mode_t mode);
 857 int smb_vfs_call_rmdir(struct vfs_handle_struct *handle, const char *path);
 858 int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
 859                           DIR *dir);
 860 void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
 861                                  DIR *dirp);
 862 int smb_vfs_call_open(struct vfs_handle_struct *handle,
 863                       struct smb_filename *smb_fname, struct files_struct *fsp,
 864                       int flags, mode_t mode);
 865 NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
 866                                   struct smb_request *req,
 867                                   uint16_t root_dir_fid,
 868                                   struct smb_filename *smb_fname,
 869                                   uint32_t access_mask,
 870                                   uint32_t share_access,
 871                                   uint32_t create_disposition,
 872                                   uint32_t create_options,
 873                                   uint32_t file_attributes,
 874                                   uint32_t oplock_request,
 875                                   uint64_t allocation_size,
 876                                   uint32_t private_flags,
 877                                   struct security_descriptor *sd,
 878                                   struct ea_list *ea_list,
 879                                   files_struct **result,
 880                                   int *pinfo);
 881 int smb_vfs_call_close(struct vfs_handle_struct *handle,
 882                        struct files_struct *fsp);
 883 ssize_t smb_vfs_call_read(struct vfs_handle_struct *handle,
 884                           struct files_struct *fsp, void *data, size_t n);
 885 ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
 886                            struct files_struct *fsp, void *data, size_t n,
 887                            off_t offset);
 888 struct tevent_req *smb_vfs_call_pread_send(struct vfs_handle_struct *handle,
 889                                            TALLOC_CTX *mem_ctx,
 890                                            struct tevent_context *ev,
 891                                            struct files_struct *fsp,
 892                                            void *data,
 893                                            size_t n, off_t offset);
 894 ssize_t SMB_VFS_PREAD_RECV(struct tevent_req *req, int *perrno);
 895
 896 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
 897                            struct files_struct *fsp, const void *data,
 898                            size_t n);
 899 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
 900                             struct files_struct *fsp, const void *data,
 901                             size_t n, off_t offset);
 902 struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
 903                                             TALLOC_CTX *mem_ctx,
 904                                             struct tevent_context *ev,
 905                                             struct files_struct *fsp,
 906                                             const void *data,
 907                                             size_t n, off_t offset);
 908 ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req, int *perrno);
 909
 910 off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
 911                              struct files_struct *fsp, off_t offset,
 912                              int whence);
 913 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
 914                               files_struct *fromfsp, const DATA_BLOB *header,
 915                               off_t offset, size_t count);
 916 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
 917                               files_struct *tofsp, off_t offset,
 918                               size_t count);
 919 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
 920                         const struct smb_filename *smb_fname_src,
 921                         const struct smb_filename *smb_fname_dst);
 922 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
 923                        struct files_struct *fsp);
 924
 925 struct tevent_req *smb_vfs_call_fsync_send(struct vfs_handle_struct *handle,
 926                                            TALLOC_CTX *mem_ctx,
 927                                            struct tevent_context *ev,
 928                                            struct files_struct *fsp);
 929 int SMB_VFS_FSYNC_RECV(struct tevent_req *req, int *perrno);
 930
 931 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
 932                       struct smb_filename *smb_fname);
 933 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
 934                        struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
 935 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
 936                        struct smb_filename *smb_filename);
 937 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
 938                                      struct files_struct *fsp,
 939                                      const SMB_STRUCT_STAT *sbuf);
 940 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
 941                         const struct smb_filename *smb_fname);
 942 int smb_vfs_call_chmod(struct vfs_handle_struct *handle, const char *path,
 943                        mode_t mode);
 944 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
 945                         struct files_struct *fsp, mode_t mode);
 946 int smb_vfs_call_chown(struct vfs_handle_struct *handle, const char *path,
 947                        uid_t uid, gid_t gid);
 948 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
 949                         struct files_struct *fsp, uid_t uid, gid_t gid);
 950 int smb_vfs_call_lchown(struct vfs_handle_struct *handle, const char *path,
 951                         uid_t uid, gid_t gid);
 952 int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path);
 953 char *smb_vfs_call_getwd(struct vfs_handle_struct *handle);
 954 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
 955                         const struct smb_filename *smb_fname,
 956                         struct smb_file_time *ft);
 957 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
 958                            struct files_struct *fsp, off_t offset);
 959 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
 960                         struct files_struct *fsp,
 961                         enum vfs_fallocate_mode mode,
 962                         off_t offset,
 963                         off_t len);
 964 bool smb_vfs_call_lock(struct vfs_handle_struct *handle,
 965                        struct files_struct *fsp, int op, off_t offset,
 966                        off_t count, int type);
 967 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
 968                               struct files_struct *fsp, uint32 share_mode,
 969                               uint32_t access_mask);
 970 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
 971                                 struct files_struct *fsp, int leasetype);
 972 bool smb_vfs_call_getlock(struct vfs_handle_struct *handle,
 973                           struct files_struct *fsp, off_t *poffset,
 974                           off_t *pcount, int *ptype, pid_t *ppid);
 975 int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
 976                          const char *newpath);
 977 int smb_vfs_call_readlink(struct vfs_handle_struct *handle,
 978                           const char *path, char *buf, size_t bufsiz);
 979 int smb_vfs_call_link(struct vfs_handle_struct *handle, const char *oldpath,
 980                       const char *newpath);
 981 int smb_vfs_call_mknod(struct vfs_handle_struct *handle, const char *path,
 982                        mode_t mode, SMB_DEV_T dev);
 983 char *smb_vfs_call_realpath(struct vfs_handle_struct *handle, const char *path);
 984 NTSTATUS smb_vfs_call_notify_watch(struct vfs_handle_struct *handle,
 985                                    struct sys_notify_context *ctx,
 986                                    const char *name,
 987                                    uint32_t *filter,
 988                                    uint32_t *subdir_filter,
 989                                    void (*callback)(struct sys_notify_context *ctx,
 990                                                     void *private_data,
 991                                                     struct notify_event *ev),
 992                                    void *private_data, void *handle_p);
 993 int smb_vfs_call_chflags(struct vfs_handle_struct *handle, const char *path,
 994                          unsigned int flags);
 995 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
 996                                            const SMB_STRUCT_STAT *sbuf);
 997 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
 998                                  struct files_struct *fsp,
 999                                  const char *fname,
1000                                  TALLOC_CTX *mem_ctx,
1001                                  unsigned int *num_streams,
1002                                  struct stream_struct **streams);
1003 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
1004                                    const char *path, const char *name,
1005                                    TALLOC_CTX *mem_ctx, char **found_name);
1006 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
1007                                      const char *filename);
1008 NTSTATUS smb_vfs_call_brl_lock_windows(struct vfs_handle_struct *handle,
1009                                        struct byte_range_lock *br_lck,
1010                                        struct lock_struct *plock,
1011                                        bool blocking_lock,
1012                                        struct blocking_lock_record *blr);
1013 bool smb_vfs_call_brl_unlock_windows(struct vfs_handle_struct *handle,
1014                                      struct messaging_context *msg_ctx,
1015                                      struct byte_range_lock *br_lck,
1016                                      const struct lock_struct *plock);
1017 bool smb_vfs_call_brl_cancel_windows(struct vfs_handle_struct *handle,
1018                                      struct byte_range_lock *br_lck,
1019                                      struct lock_struct *plock,
1020                                      struct blocking_lock_record *blr);
1021 bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
1022                               struct files_struct *fsp,
1023                               struct lock_struct *plock);
1024 void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
1025                                 struct files_struct *fsp,
1026                                 struct lock_struct *plock);
1027 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
1028                                      const char *name,
1029                                      enum vfs_translate_direction direction,
1030                                      TALLOC_CTX *mem_ctx,
1031                                      char **mapped_name);
1032 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
1033                             struct files_struct *fsp,
1034                             TALLOC_CTX *ctx,
1035                             uint32_t function,
1036                             uint16_t req_flags,
1037                             const uint8_t *_in_data,
1038                             uint32_t in_len,
1039                             uint8_t **_out_data,
1040                             uint32_t max_out_len,
1041                             uint32_t *out_len);
1042 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
1043                                   struct files_struct *fsp,
1044                                   uint32 security_info,
1045                                   struct security_descriptor **ppdesc);
1046 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
1047                                  const char *name,
1048                                  uint32 security_info,
1049                                  struct security_descriptor **ppdesc);
1050 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
1051                                   struct files_struct *fsp,
1052                                   uint32 security_info_sent,
1053                                   const struct security_descriptor *psd);
1054 NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
1055                                  struct smb_filename *file,
1056                                  struct security_acl *sacl,
1057                                  uint32_t access_requested,
1058                                  uint32_t access_denied);
1059 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle, const char *name,
1060                            mode_t mode);
1061 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
1062                             struct files_struct *fsp, mode_t mode);
1063 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
1064                                         const char *path_p,
1065                                         SMB_ACL_TYPE_T type);
1066 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
1067                                       struct files_struct *fsp);
1068 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
1069                                   const char *name, SMB_ACL_TYPE_T acltype,
1070                                   SMB_ACL_T theacl);
1071 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
1072                                 struct files_struct *fsp, SMB_ACL_T theacl);
1073 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1074                                          const char *path);
1075 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
1076                               const char *path, const char *name, void *value,
1077                               size_t size);
1078 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
1079                                struct files_struct *fsp, const char *name,
1080                                void *value, size_t size);
1081 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
1082                                const char *path, char *list, size_t size);
1083 ssize_t smb_vfs_call_llistxattr(struct vfs_handle_struct *handle,
1084                                 const char *path, char *list, size_t size);
1085 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
1086                                 struct files_struct *fsp, char *list,
1087                                 size_t size);
1088 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
1089                              const char *path, const char *name);
1090 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
1091                               struct files_struct *fsp, const char *name);
1092 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle, const char *path,
1093                           const char *name, const void *value, size_t size,
1094                           int flags);
1095 int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
1096                            const char *name, const void *value, size_t size,
1097                            int flags);
1098 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
1099                            struct files_struct *fsp, const char *name,
1100                            const void *value, size_t size, int flags);
1101 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
1102                             struct files_struct *fsp);
1103 bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
1104                              const struct smb_filename *fname,
1105                              SMB_STRUCT_STAT *sbuf);
1106 int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
1107                              const struct smb_filename *fname);
1108
1109 NTSTATUS smb_register_vfs(int version, const char *name,
1110                           const struct vfs_fn_pointers *fns);
1111 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
1112                                    files_struct *fsp, size_t ext_size,
1113                                    void (*destroy_fn)(void *p_data));
1114 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1115 void vfs_remove_all_fsp_extensions(struct files_struct *fsp);
1116 void *vfs_memctx_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1117 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1118
1119 #endif /* _VFS_H */