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 smbXsrv_open *op;
 190         struct connection_struct *conn;
 191         struct fd_handle *fh;
 192         unsigned int num_smb_operations;
 193         struct file_id file_id;
 194         uint64_t initial_allocation_size; /* Faked up initial allocation on disk. */
 195         uint16 file_pid;
 196         uint64_t vuid; /* SMB2 compat */
 197         struct write_cache *wcp;
 198         struct timeval open_time;
 199         uint32 access_mask;             /* NTCreateX access bits (FILE_READ_DATA etc.) */
 200         uint32 share_access;            /* NTCreateX share constants (FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE). */
 201
 202         bool update_write_time_triggered;
 203         struct timed_event *update_write_time_event;
 204         bool update_write_time_on_close;
 205         struct timespec close_write_time;
 206         bool write_time_forced;
 207
 208         int oplock_type;
 209         int sent_oplock_break;
 210         struct timed_event *oplock_timeout;
 211         struct lock_struct last_lock_failure;
 212         int current_lock_count; /* Count the number of outstanding locks and pending locks. */
 213
 214         struct share_mode_entry *pending_break_messages;
 215         int num_pending_break_messages;
 216
 217         bool can_lock;
 218         bool can_read;
 219         bool can_write;
 220         bool modified;
 221         bool is_directory;
 222         bool aio_write_behind;
 223         bool lockdb_clean;
 224         bool initial_delete_on_close; /* Only set at NTCreateX if file was created. */
 225         bool delete_on_close;
 226         bool posix_open;
 227         bool is_sparse;
 228         struct smb_filename *fsp_name;
 229         uint32_t name_hash;             /* Jenkins hash of full pathname. */
 230         uint64_t mid;                   /* Mid of the operation that created us. */
 231
 232         struct vfs_fsp_data *vfs_extension;
 233         struct fake_file_handle *fake_file_handle;
 234
 235         struct notify_change_buf *notify;
 236
 237         struct files_struct *base_fsp; /* placeholder for delete on close */
 238
 239         /*
 240          * Read-only cached brlock record, thrown away when the
 241          * brlock.tdb seqnum changes. This avoids fetching data from
 242          * the brlock.tdb on every read/write call.
 243          */
 244         int brlock_seqnum;
 245         struct byte_range_lock *brlock_rec;
 246
 247         struct dptr_struct *dptr;
 248
 249         /* if not NULL, means this is a print file */
 250         struct print_file_data *print_file;
 251
 252 } files_struct;
 253
 254 struct vuid_cache_entry {
 255         struct auth_session_info *session_info;
 256         uint64_t vuid; /* SMB2 compat */
 257         bool read_only;
 258 };
 259
 260 struct vuid_cache {
 261         unsigned int next_entry;
 262         struct vuid_cache_entry array[VUID_CACHE_SIZE];
 263 };
 264
 265 typedef struct {
 266         char *name;
 267         bool is_wild;
 268 } name_compare_entry;
 269
 270 struct dfree_cached_info {
 271         time_t last_dfree_time;
 272         uint64_t dfree_ret;
 273         uint64_t bsize;
 274         uint64_t dfree;
 275         uint64_t dsize;
 276 };
 277
 278 struct share_params {
 279         int service;
 280 };
 281
 282 typedef struct connection_struct {
 283         struct connection_struct *next, *prev;
 284         struct smbd_server_connection *sconn; /* can be NULL */
 285         struct smbXsrv_tcon *tcon; /* can be NULL */
 286         uint32_t cnum; /* an index passed over the wire */
 287         struct share_params *params;
 288         bool force_user;
 289         struct vuid_cache vuid_cache;
 290         bool printer;
 291         bool ipc;
 292         bool read_only; /* Attributes for the current user of the share. */
 293         uint32_t share_access;
 294         /* Does this filesystem honor
 295            sub second timestamps on files
 296            and directories when setting time ? */
 297         enum timestamp_set_resolution ts_res;
 298         char *connectpath;
 299         char *origpath;
 300
 301         struct vfs_handle_struct *vfs_handles;          /* for the new plugins */
 302
 303         /*
 304          * This represents the user information on this connection. Depending
 305          * on the vuid using this tid, this might change per SMB request.
 306          */
 307         struct auth_session_info *session_info;
 308
 309         /*
 310          * If the "force group" parameter is set, this is the primary gid that
 311          * may be used in the users token, depending on the vuid using this tid.
 312          */
 313         gid_t force_group_gid;
 314
 315         uint64_t vuid; /* vuid of user who *opened* this connection, or UID_FIELD_INVALID */
 316
 317         time_t lastused;
 318         time_t lastused_count;
 319         int num_files_open;
 320         unsigned int num_smb_operations; /* Count of smb operations on this tree. */
 321         int encrypt_level;
 322         bool encrypted_tid;
 323
 324         /* Semantics requested by the client or forced by the server config. */
 325         bool case_sensitive;
 326         bool case_preserve;
 327         bool short_case_preserve;
 328
 329         /* Semantics provided by the underlying filesystem. */
 330         int fs_capabilities;
 331         /* Device number of the directory of the share mount.
 332            Used to ensure unique FileIndex returns. */
 333         SMB_DEV_T base_share_dev;
 334
 335         name_compare_entry *hide_list; /* Per-share list of files to return as hidden. */
 336         name_compare_entry *veto_list; /* Per-share list of files to veto (never show). */
 337         name_compare_entry *veto_oplock_list; /* Per-share list of files to refuse oplocks on. */
 338         name_compare_entry *aio_write_behind_list; /* Per-share list of files to use aio write behind on. */
 339         struct dfree_cached_info *dfree_info;
 340         struct trans_state *pending_trans;
 341
 342         struct rpc_pipe_client *spoolss_pipe;
 343
 344 } connection_struct;
 345
 346 struct smbd_smb2_request;
 347 struct privilege_paths;
 348
 349 struct smb_request {
 350         uint8_t cmd;
 351         uint16 flags2;
 352         uint16 smbpid;
 353         uint64_t mid; /* For compatibility with SMB2. */
 354         uint32_t seqnum;
 355         uint64_t vuid; /* For compatibility with SMB2. */
 356         uint32_t tid;
 357         uint8  wct;
 358         const uint16_t *vwv;
 359         uint16_t buflen;
 360         const uint8_t *buf;
 361         const uint8 *inbuf;
 362
 363         /*
 364          * Async handling in the main smb processing loop is directed by
 365          * outbuf: reply_xxx routines indicate sync behaviour by putting their
 366          * reply into "outbuf". If they leave it as NULL, they take care of it
 367          * themselves, possibly later.
 368          *
 369          * If async handling is wanted, the reply_xxx routine must make sure
 370          * that it talloc_move()s the smb_req somewhere else.
 371          */
 372         uint8 *outbuf;
 373
 374         size_t unread_bytes;
 375         bool encrypted;
 376         connection_struct *conn;
 377         struct smbd_server_connection *sconn;
 378         struct smb_perfcount_data pcd;
 379
 380         /*
 381          * Chained request handling
 382          */
 383         struct files_struct *chain_fsp;
 384
 385         /*
 386          * state information for async smb handling
 387          */
 388         void *async_priv;
 389
 390         /*
 391          * Back pointer to smb2 request.
 392          */
 393         struct smbd_smb2_request *smb2req;
 394
 395         /*
 396          * Pathnames used if request done
 397          * under privilege.
 398          */
 399         struct privilege_paths *priv_paths;
 400
 401         /*
 402          * Request list for chained requests, we're part of it.
 403          */
 404         struct smb_request **chain;
 405
 406         struct timeval request_time;
 407 };
 408
 409 /*
 410  * Info about an alternate data stream
 411  */
 412
 413 struct stream_struct {
 414         off_t size;
 415         off_t alloc_size;
 416         char *name;
 417 };
 418
 419 /* time info */
 420 struct smb_file_time {
 421         struct timespec mtime;
 422         struct timespec atime;
 423         struct timespec ctime;
 424         struct timespec create_time;
 425 };
 426
 427 /*
 428  * smb_filename
 429  */
 430 struct smb_filename {
 431         char *base_name;
 432         char *stream_name;
 433         char *original_lcomp;
 434         SMB_STRUCT_STAT st;
 435 };
 436
 437 #define VFS_FIND(__fn__) while (handle->fns->__fn__##_fn==NULL) { \
 438                                 handle = handle->next; \
 439                          }
 440
 441 enum vfs_translate_direction {
 442         vfs_translate_to_unix = 0,
 443         vfs_translate_to_windows
 444 };
 445
 446 enum vfs_fallocate_mode {
 447         VFS_FALLOCATE_EXTEND_SIZE = 0,
 448         VFS_FALLOCATE_KEEP_SIZE = 1
 449 };
 450
 451 /*
 452     Available VFS operations. These values must be in sync with vfs_ops struct
 453     (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
 454     In particular, if new operations are added to vfs_ops, appropriate constants
 455     should be added to vfs_op_type so that order of them kept same as in vfs_ops.
 456 */
 457 struct shadow_copy_data;
 458
 459 struct vfs_fn_pointers {
 460         /* Disk operations */
 461
 462         int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
 463         void (*disconnect_fn)(struct vfs_handle_struct *handle);
 464         uint64_t (*disk_free_fn)(struct vfs_handle_struct *handle, const char *path, bool small_query, uint64_t *bsize,
 465                               uint64_t *dfree, uint64_t *dsize);
 466         int (*get_quota_fn)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
 467         int (*set_quota_fn)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
 468         int (*get_shadow_copy_data_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, struct shadow_copy_data *shadow_copy_data, bool labels);
 469         int (*statvfs_fn)(struct vfs_handle_struct *handle, const char *path, struct vfs_statvfs_struct *statbuf);
 470         uint32_t (*fs_capabilities_fn)(struct vfs_handle_struct *handle, enum timestamp_set_resolution *p_ts_res);
 471
 472         /*
 473          * Note: that "struct dfs_GetDFSReferral *r"
 474          * needs to be a valid TALLOC_CTX
 475          */
 476         NTSTATUS (*get_dfs_referrals_fn)(struct vfs_handle_struct *handle,
 477                                          struct dfs_GetDFSReferral *r);
 478
 479         /* Directory operations */
 480
 481         DIR *(*opendir_fn)(struct vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attributes);
 482         DIR *(*fdopendir_fn)(struct vfs_handle_struct *handle, files_struct *fsp, const char *mask, uint32 attributes);
 483         struct dirent *(*readdir_fn)(struct vfs_handle_struct *handle,
 484                                          DIR *dirp,
 485                                          SMB_STRUCT_STAT *sbuf);
 486         void (*seekdir_fn)(struct vfs_handle_struct *handle, DIR *dirp, long offset);
 487         long (*telldir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 488         void (*rewind_dir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 489         int (*mkdir_fn)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
 490         int (*rmdir_fn)(struct vfs_handle_struct *handle, const char *path);
 491         int (*closedir_fn)(struct vfs_handle_struct *handle, DIR *dir);
 492         void (*init_search_op_fn)(struct vfs_handle_struct *handle, DIR *dirp);
 493
 494         /* File operations */
 495
 496         int (*open_fn)(struct vfs_handle_struct *handle,
 497                        struct smb_filename *smb_fname, files_struct *fsp,
 498                        int flags, mode_t mode);
 499         NTSTATUS (*create_file_fn)(struct vfs_handle_struct *handle,
 500                                    struct smb_request *req,
 501                                    uint16_t root_dir_fid,
 502                                    struct smb_filename *smb_fname,
 503                                    uint32_t access_mask,
 504                                    uint32_t share_access,
 505                                    uint32_t create_disposition,
 506                                    uint32_t create_options,
 507                                    uint32_t file_attributes,
 508                                    uint32_t oplock_request,
 509                                    uint64_t allocation_size,
 510                                    uint32_t private_flags,
 511                                    struct security_descriptor *sd,
 512                                    struct ea_list *ea_list,
 513                                    files_struct **result,
 514                                    int *pinfo);
 515         int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 516         ssize_t (*read_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n);
 517         ssize_t (*pread_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n, off_t offset);
 518         ssize_t (*write_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n);
 519         ssize_t (*pwrite_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n, off_t offset);
 520         struct tevent_req *(*pwrite_send_fn)(struct vfs_handle_struct *handle,
 521                                              TALLOC_CTX *mem_ctx,
 522                                              struct tevent_context *ev,
 523                                              struct files_struct *fsp,
 524                                              const void *data,
 525                                              size_t n, off_t offset);
 526         ssize_t (*pwrite_recv_fn)(struct tevent_req *req, int *err);
 527         off_t (*lseek_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset, int whence);
 528         ssize_t (*sendfile_fn)(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *header, off_t offset, size_t count);
 529         ssize_t (*recvfile_fn)(struct vfs_handle_struct *handle, int fromfd, files_struct *tofsp, off_t offset, size_t count);
 530         int (*rename_fn)(struct vfs_handle_struct *handle,
 531                          const struct smb_filename *smb_fname_src,
 532                          const struct smb_filename *smb_fname_dst);
 533         int (*fsync_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 534         int (*stat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_fname);
 535         int (*fstat_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
 536         int (*lstat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_filename);
 537         uint64_t (*get_alloc_size_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_STAT *sbuf);
 538         int (*unlink_fn)(struct vfs_handle_struct *handle,
 539                          const struct smb_filename *smb_fname);
 540         int (*chmod_fn)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
 541         int (*fchmod_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
 542         int (*chown_fn)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
 543         int (*fchown_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, uid_t uid, gid_t gid);
 544         int (*lchown_fn)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
 545         int (*chdir_fn)(struct vfs_handle_struct *handle, const char *path);
 546         char *(*getwd_fn)(struct vfs_handle_struct *handle);
 547         int (*ntimes_fn)(struct vfs_handle_struct *handle,
 548                          const struct smb_filename *smb_fname,
 549                          struct smb_file_time *ft);
 550         int (*ftruncate_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset);
 551         int (*fallocate_fn)(struct vfs_handle_struct *handle,
 552                             struct files_struct *fsp,
 553                             enum vfs_fallocate_mode mode,
 554                             off_t offset,
 555                             off_t len);
 556         bool (*lock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, off_t offset, off_t count, int type);
 557         int (*kernel_flock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp,
 558                                uint32 share_mode, uint32_t access_mask);
 559         int (*linux_setlease_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int leasetype);
 560         bool (*getlock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid);
 561         int (*symlink_fn)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
 562         int (*readlink_fn)(struct vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz);
 563         int (*link_fn)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
 564         int (*mknod_fn)(struct vfs_handle_struct *handle, const char *path, mode_t mode, SMB_DEV_T dev);
 565         char *(*realpath_fn)(struct vfs_handle_struct *handle, const char *path);
 566         NTSTATUS (*notify_watch_fn)(struct vfs_handle_struct *handle,
 567                                     struct sys_notify_context *ctx,
 568                                     const char *path,
 569                                     uint32_t *filter,
 570                                     uint32_t *subdir_filter,
 571                                     void (*callback)(struct sys_notify_context *ctx,
 572                                                      void *private_data,
 573                                                      struct notify_event *ev),
 574                                     void *private_data,
 575                                     void *handle_p);
 576         int (*chflags_fn)(struct vfs_handle_struct *handle, const char *path, unsigned int flags);
 577         struct file_id (*file_id_create_fn)(struct vfs_handle_struct *handle,
 578                                             const SMB_STRUCT_STAT *sbuf);
 579
 580         NTSTATUS (*streaminfo_fn)(struct vfs_handle_struct *handle,
 581                                   struct files_struct *fsp,
 582                                   const char *fname,
 583                                   TALLOC_CTX *mem_ctx,
 584                                   unsigned int *num_streams,
 585                                   struct stream_struct **streams);
 586
 587         int (*get_real_filename_fn)(struct vfs_handle_struct *handle,
 588                                     const char *path,
 589                                     const char *name,
 590                                     TALLOC_CTX *mem_ctx,
 591                                     char **found_name);
 592
 593         const char *(*connectpath_fn)(struct vfs_handle_struct *handle,
 594                                       const char *filename);
 595
 596         NTSTATUS (*brl_lock_windows_fn)(struct vfs_handle_struct *handle,
 597                                         struct byte_range_lock *br_lck,
 598                                         struct lock_struct *plock,
 599                                         bool blocking_lock,
 600                                         struct blocking_lock_record *blr);
 601
 602         bool (*brl_unlock_windows_fn)(struct vfs_handle_struct *handle,
 603                                       struct messaging_context *msg_ctx,
 604                                       struct byte_range_lock *br_lck,
 605                                       const struct lock_struct *plock);
 606
 607         bool (*brl_cancel_windows_fn)(struct vfs_handle_struct *handle,
 608                                       struct byte_range_lock *br_lck,
 609                                       struct lock_struct *plock,
 610                                       struct blocking_lock_record *blr);
 611
 612         bool (*strict_lock_fn)(struct vfs_handle_struct *handle,
 613                                struct files_struct *fsp,
 614                                struct lock_struct *plock);
 615
 616         void (*strict_unlock_fn)(struct vfs_handle_struct *handle,
 617                                  struct files_struct *fsp,
 618                                  struct lock_struct *plock);
 619
 620         NTSTATUS (*translate_name_fn)(struct vfs_handle_struct *handle,
 621                                       const char *name,
 622                                       enum vfs_translate_direction direction,
 623                                       TALLOC_CTX *mem_ctx,
 624                                       char **mapped_name);
 625
 626         NTSTATUS (*fsctl_fn)(struct vfs_handle_struct *handle,
 627                              struct files_struct *fsp,
 628                              TALLOC_CTX *ctx,
 629                              uint32_t function,
 630                              uint16_t req_flags,
 631                              const uint8_t *_in_data,
 632                              uint32_t in_len,
 633                              uint8_t **_out_data,
 634                              uint32_t max_out_len,
 635                              uint32_t *out_len);
 636
 637         /* NT ACL operations. */
 638
 639         NTSTATUS (*fget_nt_acl_fn)(struct vfs_handle_struct *handle,
 640                                    struct files_struct *fsp,
 641                                    uint32 security_info,
 642                                    struct security_descriptor **ppdesc);
 643         NTSTATUS (*get_nt_acl_fn)(struct vfs_handle_struct *handle,
 644                                   const char *name,
 645                                   uint32 security_info,
 646                                   struct security_descriptor **ppdesc);
 647         NTSTATUS (*fset_nt_acl_fn)(struct vfs_handle_struct *handle,
 648                                    struct files_struct *fsp,
 649                                    uint32 security_info_sent,
 650                                    const struct security_descriptor *psd);
 651
 652         NTSTATUS (*audit_file_fn)(struct vfs_handle_struct *handle,
 653                                   struct smb_filename *file,
 654                                   struct security_acl *sacl,
 655                                   uint32_t access_requested,
 656                                   uint32_t access_denied);
 657
 658         /* POSIX ACL operations. */
 659
 660         int (*chmod_acl_fn)(struct vfs_handle_struct *handle, const char *name, mode_t mode);
 661         int (*fchmod_acl_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
 662
 663         int (*sys_acl_get_entry_fn)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p);
 664         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);
 665         int (*sys_acl_get_permset_fn)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p);
 666         void * (*sys_acl_get_qualifier_fn)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry_d);
 667         SMB_ACL_T (*sys_acl_get_file_fn)(struct vfs_handle_struct *handle, const char *path_p, SMB_ACL_TYPE_T type);
 668         SMB_ACL_T (*sys_acl_get_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
 669         int (*sys_acl_clear_perms_fn)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset);
 670         int (*sys_acl_add_perm_fn)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
 671         char * (*sys_acl_to_text_fn)(struct vfs_handle_struct *handle, SMB_ACL_T theacl, ssize_t *plen);
 672         SMB_ACL_T (*sys_acl_init_fn)(struct vfs_handle_struct *handle, int count);
 673         int (*sys_acl_create_entry_fn)(struct vfs_handle_struct *handle, SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry);
 674         int (*sys_acl_set_tag_type_fn)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype);
 675         int (*sys_acl_set_qualifier_fn)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, void *qual);
 676         int (*sys_acl_set_permset_fn)(struct vfs_handle_struct *handle, SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset);
 677         int (*sys_acl_valid_fn)(struct vfs_handle_struct *handle, SMB_ACL_T theacl );
 678         int (*sys_acl_set_file_fn)(struct vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
 679         int (*sys_acl_set_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_ACL_T theacl);
 680         int (*sys_acl_delete_def_file_fn)(struct vfs_handle_struct *handle, const char *path);
 681         int (*sys_acl_get_perm_fn)(struct vfs_handle_struct *handle, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm);
 682         int (*sys_acl_free_text_fn)(struct vfs_handle_struct *handle, char *text);
 683         int (*sys_acl_free_acl_fn)(struct vfs_handle_struct *handle, SMB_ACL_T posix_acl);
 684         int (*sys_acl_free_qualifier_fn)(struct vfs_handle_struct *handle, void *qualifier, SMB_ACL_TAG_T tagtype);
 685
 686         /* EA operations. */
 687         ssize_t (*getxattr_fn)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
 688         ssize_t (*fgetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size);
 689         ssize_t (*listxattr_fn)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
 690         ssize_t (*flistxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size);
 691         int (*removexattr_fn)(struct vfs_handle_struct *handle, const char *path, const char *name);
 692         int (*fremovexattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name);
 693         int (*setxattr_fn)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
 694         int (*fsetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags);
 695
 696         /* aio operations */
 697         int (*aio_read_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
 698         int (*aio_write_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
 699         ssize_t (*aio_return_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
 700         int (*aio_cancel_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
 701         int (*aio_error_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
 702         int (*aio_fsync_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, SMB_STRUCT_AIOCB *aiocb);
 703         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);
 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 ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
 889                            struct files_struct *fsp, const void *data,
 890                            size_t n);
 891 ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
 892                             struct files_struct *fsp, const void *data,
 893                             size_t n, off_t offset);
 894 struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
 895                                             TALLOC_CTX *mem_ctx,
 896                                             struct tevent_context *ev,
 897                                             struct files_struct *fsp,
 898                                             const void *data,
 899                                             size_t n, off_t offset);
 900 ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req, int *perrno);
 901
 902 off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
 903                              struct files_struct *fsp, off_t offset,
 904                              int whence);
 905 ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
 906                               files_struct *fromfsp, const DATA_BLOB *header,
 907                               off_t offset, size_t count);
 908 ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
 909                               files_struct *tofsp, off_t offset,
 910                               size_t count);
 911 int smb_vfs_call_rename(struct vfs_handle_struct *handle,
 912                         const struct smb_filename *smb_fname_src,
 913                         const struct smb_filename *smb_fname_dst);
 914 int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
 915                        struct files_struct *fsp);
 916 int smb_vfs_call_stat(struct vfs_handle_struct *handle,
 917                       struct smb_filename *smb_fname);
 918 int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
 919                        struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
 920 int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
 921                        struct smb_filename *smb_filename);
 922 uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
 923                                      struct files_struct *fsp,
 924                                      const SMB_STRUCT_STAT *sbuf);
 925 int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
 926                         const struct smb_filename *smb_fname);
 927 int smb_vfs_call_chmod(struct vfs_handle_struct *handle, const char *path,
 928                        mode_t mode);
 929 int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
 930                         struct files_struct *fsp, mode_t mode);
 931 int smb_vfs_call_chown(struct vfs_handle_struct *handle, const char *path,
 932                        uid_t uid, gid_t gid);
 933 int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
 934                         struct files_struct *fsp, uid_t uid, gid_t gid);
 935 int smb_vfs_call_lchown(struct vfs_handle_struct *handle, const char *path,
 936                         uid_t uid, gid_t gid);
 937 int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path);
 938 char *smb_vfs_call_getwd(struct vfs_handle_struct *handle);
 939 int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
 940                         const struct smb_filename *smb_fname,
 941                         struct smb_file_time *ft);
 942 int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
 943                            struct files_struct *fsp, off_t offset);
 944 int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
 945                         struct files_struct *fsp,
 946                         enum vfs_fallocate_mode mode,
 947                         off_t offset,
 948                         off_t len);
 949 bool smb_vfs_call_lock(struct vfs_handle_struct *handle,
 950                        struct files_struct *fsp, int op, off_t offset,
 951                        off_t count, int type);
 952 int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
 953                               struct files_struct *fsp, uint32 share_mode,
 954                               uint32_t access_mask);
 955 int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
 956                                 struct files_struct *fsp, int leasetype);
 957 bool smb_vfs_call_getlock(struct vfs_handle_struct *handle,
 958                           struct files_struct *fsp, off_t *poffset,
 959                           off_t *pcount, int *ptype, pid_t *ppid);
 960 int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
 961                          const char *newpath);
 962 int smb_vfs_call_readlink(struct vfs_handle_struct *handle,
 963                           const char *path, char *buf, size_t bufsiz);
 964 int smb_vfs_call_link(struct vfs_handle_struct *handle, const char *oldpath,
 965                       const char *newpath);
 966 int smb_vfs_call_mknod(struct vfs_handle_struct *handle, const char *path,
 967                        mode_t mode, SMB_DEV_T dev);
 968 char *smb_vfs_call_realpath(struct vfs_handle_struct *handle, const char *path);
 969 NTSTATUS smb_vfs_call_notify_watch(struct vfs_handle_struct *handle,
 970                                    struct sys_notify_context *ctx,
 971                                    const char *name,
 972                                    uint32_t *filter,
 973                                    uint32_t *subdir_filter,
 974                                    void (*callback)(struct sys_notify_context *ctx,
 975                                                     void *private_data,
 976                                                     struct notify_event *ev),
 977                                    void *private_data, void *handle_p);
 978 int smb_vfs_call_chflags(struct vfs_handle_struct *handle, const char *path,
 979                          unsigned int flags);
 980 struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
 981                                            const SMB_STRUCT_STAT *sbuf);
 982 NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
 983                                  struct files_struct *fsp,
 984                                  const char *fname,
 985                                  TALLOC_CTX *mem_ctx,
 986                                  unsigned int *num_streams,
 987                                  struct stream_struct **streams);
 988 int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
 989                                    const char *path, const char *name,
 990                                    TALLOC_CTX *mem_ctx, char **found_name);
 991 const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
 992                                      const char *filename);
 993 NTSTATUS smb_vfs_call_brl_lock_windows(struct vfs_handle_struct *handle,
 994                                        struct byte_range_lock *br_lck,
 995                                        struct lock_struct *plock,
 996                                        bool blocking_lock,
 997                                        struct blocking_lock_record *blr);
 998 bool smb_vfs_call_brl_unlock_windows(struct vfs_handle_struct *handle,
 999                                      struct messaging_context *msg_ctx,
1000                                      struct byte_range_lock *br_lck,
1001                                      const struct lock_struct *plock);
1002 bool smb_vfs_call_brl_cancel_windows(struct vfs_handle_struct *handle,
1003                                      struct byte_range_lock *br_lck,
1004                                      struct lock_struct *plock,
1005                                      struct blocking_lock_record *blr);
1006 bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
1007                               struct files_struct *fsp,
1008                               struct lock_struct *plock);
1009 void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
1010                                 struct files_struct *fsp,
1011                                 struct lock_struct *plock);
1012 NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
1013                                      const char *name,
1014                                      enum vfs_translate_direction direction,
1015                                      TALLOC_CTX *mem_ctx,
1016                                      char **mapped_name);
1017 NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
1018                             struct files_struct *fsp,
1019                             TALLOC_CTX *ctx,
1020                             uint32_t function,
1021                             uint16_t req_flags,
1022                             const uint8_t *_in_data,
1023                             uint32_t in_len,
1024                             uint8_t **_out_data,
1025                             uint32_t max_out_len,
1026                             uint32_t *out_len);
1027 NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
1028                                   struct files_struct *fsp,
1029                                   uint32 security_info,
1030                                   struct security_descriptor **ppdesc);
1031 NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
1032                                  const char *name,
1033                                  uint32 security_info,
1034                                  struct security_descriptor **ppdesc);
1035 NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
1036                                   struct files_struct *fsp,
1037                                   uint32 security_info_sent,
1038                                   const struct security_descriptor *psd);
1039 NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
1040                                  struct smb_filename *file,
1041                                  struct security_acl *sacl,
1042                                  uint32_t access_requested,
1043                                  uint32_t access_denied);
1044 int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle, const char *name,
1045                            mode_t mode);
1046 int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
1047                             struct files_struct *fsp, mode_t mode);
1048 int smb_vfs_call_sys_acl_get_entry(struct vfs_handle_struct *handle,
1049                                    SMB_ACL_T theacl, int entry_id,
1050                                    SMB_ACL_ENTRY_T *entry_p);
1051 int smb_vfs_call_sys_acl_get_tag_type(struct vfs_handle_struct *handle,
1052                                       SMB_ACL_ENTRY_T entry_d,
1053                                       SMB_ACL_TAG_T *tag_type_p);
1054 int smb_vfs_call_sys_acl_get_permset(struct vfs_handle_struct *handle,
1055                                      SMB_ACL_ENTRY_T entry_d,
1056                                      SMB_ACL_PERMSET_T *permset_p);
1057 void * smb_vfs_call_sys_acl_get_qualifier(struct vfs_handle_struct *handle,
1058                                           SMB_ACL_ENTRY_T entry_d);
1059 SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
1060                                         const char *path_p,
1061                                         SMB_ACL_TYPE_T type);
1062 SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
1063                                       struct files_struct *fsp);
1064 int smb_vfs_call_sys_acl_clear_perms(struct vfs_handle_struct *handle,
1065                                      SMB_ACL_PERMSET_T permset);
1066 int smb_vfs_call_sys_acl_add_perm(struct vfs_handle_struct *handle,
1067                                   SMB_ACL_PERMSET_T permset,
1068                                   SMB_ACL_PERM_T perm);
1069 char * smb_vfs_call_sys_acl_to_text(struct vfs_handle_struct *handle,
1070                                     SMB_ACL_T theacl, ssize_t *plen);
1071 SMB_ACL_T smb_vfs_call_sys_acl_init(struct vfs_handle_struct *handle,
1072                                     int count);
1073 int smb_vfs_call_sys_acl_create_entry(struct vfs_handle_struct *handle,
1074                                       SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry);
1075 int smb_vfs_call_sys_acl_set_tag_type(struct vfs_handle_struct *handle,
1076                                       SMB_ACL_ENTRY_T entry,
1077                                       SMB_ACL_TAG_T tagtype);
1078 int smb_vfs_call_sys_acl_set_qualifier(struct vfs_handle_struct *handle,
1079                                        SMB_ACL_ENTRY_T entry, void *qual);
1080 int smb_vfs_call_sys_acl_set_permset(struct vfs_handle_struct *handle,
1081                                      SMB_ACL_ENTRY_T entry,
1082                                      SMB_ACL_PERMSET_T permset);
1083 int smb_vfs_call_sys_acl_valid(struct vfs_handle_struct *handle,
1084                                SMB_ACL_T theacl);
1085 int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
1086                                   const char *name, SMB_ACL_TYPE_T acltype,
1087                                   SMB_ACL_T theacl);
1088 int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
1089                                 struct files_struct *fsp, SMB_ACL_T theacl);
1090 int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
1091                                          const char *path);
1092 int smb_vfs_call_sys_acl_get_perm(struct vfs_handle_struct *handle,
1093                                   SMB_ACL_PERMSET_T permset,
1094                                   SMB_ACL_PERM_T perm);
1095 int smb_vfs_call_sys_acl_free_text(struct vfs_handle_struct *handle,
1096                                    char *text);
1097 int smb_vfs_call_sys_acl_free_acl(struct vfs_handle_struct *handle,
1098                                   SMB_ACL_T posix_acl);
1099 int smb_vfs_call_sys_acl_free_qualifier(struct vfs_handle_struct *handle,
1100                                         void *qualifier, SMB_ACL_TAG_T tagtype);
1101 ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
1102                               const char *path, const char *name, void *value,
1103                               size_t size);
1104 ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
1105                                struct files_struct *fsp, const char *name,
1106                                void *value, size_t size);
1107 ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
1108                                const char *path, char *list, size_t size);
1109 ssize_t smb_vfs_call_llistxattr(struct vfs_handle_struct *handle,
1110                                 const char *path, char *list, size_t size);
1111 ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
1112                                 struct files_struct *fsp, char *list,
1113                                 size_t size);
1114 int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
1115                              const char *path, const char *name);
1116 int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
1117                               struct files_struct *fsp, const char *name);
1118 int smb_vfs_call_setxattr(struct vfs_handle_struct *handle, const char *path,
1119                           const char *name, const void *value, size_t size,
1120                           int flags);
1121 int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
1122                            const char *name, const void *value, size_t size,
1123                            int flags);
1124 int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
1125                            struct files_struct *fsp, const char *name,
1126                            const void *value, size_t size, int flags);
1127 int smb_vfs_call_aio_read(struct vfs_handle_struct *handle,
1128                           struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
1129 int smb_vfs_call_aio_write(struct vfs_handle_struct *handle,
1130                            struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
1131 ssize_t smb_vfs_call_aio_return(struct vfs_handle_struct *handle,
1132                                 struct files_struct *fsp,
1133                                 SMB_STRUCT_AIOCB *aiocb);
1134 int smb_vfs_call_aio_cancel(struct vfs_handle_struct *handle,
1135                             struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb);
1136 int smb_vfs_call_aio_error(struct vfs_handle_struct *handle,
1137                            struct files_struct *fsp,
1138                            SMB_STRUCT_AIOCB *aiocb);
1139 int smb_vfs_call_aio_fsync(struct vfs_handle_struct *handle,
1140                            struct files_struct *fsp, int op,
1141                            SMB_STRUCT_AIOCB *aiocb);
1142 int smb_vfs_call_aio_suspend(struct vfs_handle_struct *handle,
1143                              struct files_struct *fsp,
1144                              const SMB_STRUCT_AIOCB * const aiocb[], int n,
1145                              const struct timespec *timeout);
1146 bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
1147                             struct files_struct *fsp);
1148 bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
1149                              const struct smb_filename *fname,
1150                              SMB_STRUCT_STAT *sbuf);
1151 int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
1152                              const struct smb_filename *fname);
1153
1154 NTSTATUS smb_register_vfs(int version, const char *name,
1155                           const struct vfs_fn_pointers *fns);
1156 void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
1157                                    files_struct *fsp, size_t ext_size,
1158                                    void (*destroy_fn)(void *p_data));
1159 void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1160 void vfs_remove_all_fsp_extensions(struct files_struct *fsp);
1161 void *vfs_memctx_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1162 void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
1163
1164 #endif /* _VFS_H */