source3/include/vfs.h

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