Add uint32_t share_access to vuid_cache_entry.

[Samba/gebeck_regimport.git] / source3 / include / vfs.h

/* 
   Unix SMB/CIFS implementation.
   VFS structures and parameters
   Copyright (C) Jeremy Allison                         1999-2005
   Copyright (C) Tim Potter                             1999
   Copyright (C) Alexander Bokovoy                      2002-2005
   Copyright (C) Stefan (metze) Metzmacher              2003
   Copyright (C) Volker Lendecke                        2009

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.

   This work was sponsored by Optifacio Software Services, Inc.
*/

#ifndef _VFS_H
#define _VFS_H

/* Avoid conflict with an AIX include file */

#ifdef vfs_ops
#undef vfs_ops
#endif

/*
 * As we're now (thanks Andrew ! :-) using file_structs and connection
 * structs in the vfs - then anyone writing a vfs must include includes.h...
 */

/*
 * This next constant specifies the version number of the VFS interface
 * this smbd will load. Increment this if *ANY* changes are made to the
 * vfs_ops below. JRA.
 *
 * If you change anything here, please also update modules/vfs_full_audit.c.
 * VL.
 */

/* Changed to version 2 for CIFS UNIX extensions (mknod and link added). JRA. */
/* Changed to version 3 for POSIX acl extensions. JRA. */
/* Changed to version 4 for cascaded VFS interface. Alexander Bokovoy. */
/* Changed to version 5 for sendfile addition. JRA. */
/* Changed to version 6 for the new module system, fixed cascading and quota functions. --metze */
/* Changed to version 7 to include the get_nt_acl info parameter. JRA. */
/* Changed to version 8 includes EA calls. JRA. */
/* Changed to version 9 to include the get_shadow_data call. --metze */
/* Changed to version 10 to include pread/pwrite calls. */
/* Changed to version 11 to include seekdir/telldir/rewinddir calls. JRA */
/* Changed to version 12 to add mask and attributes to opendir(). JRA 
   Also include aio calls. JRA. */
/* Changed to version 13 as the internal structure of files_struct has changed. JRA */
/* Changed to version 14 as we had to change DIR to SMB_STRUCT_DIR. JRA */
/* Changed to version 15 as we added the statvfs call. JRA */
/* Changed to version 16 as we added the getlock call. JRA */
/* Changed to version 17 as we removed redundant connection_struct parameters. --jpeach */
/* Changed to version 18 to add fsp parameter to the open call -- jpeach 
   Also include kernel_flock call - jmcd */
/* Changed to version 19, kernel change notify has been merged 
   Also included linux setlease call - jmcd */
/* Changed to version 20, use ntimes call instead of utime (greater
 * timestamp resolition. JRA. */
/* Changed to version21 to add chflags operation -- jpeach */
/* Changed to version22 to add lchown operation -- jra */
/* Leave at 22 - not yet released. But change set_nt_acl to return an NTSTATUS. jra. */
/* Leave at 22 - not yet released. Add file_id_create operation. --metze */
/* Leave at 22 - not yet released. Change all BOOL parameters (int) to bool. jra. */
/* Leave at 22 - not yet released. Added recvfile. */
/* Leave at 22 - not yet released. Change get_nt_acl to return NTSTATUS - vl */
/* Leave at 22 - not yet released. Change get_nt_acl to *not* take a
 * files_struct. - obnox.*/
/* Leave at 22 - not yet released. Remove parameter fd from fget_nt_acl. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from gset_nt_acl. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from pread. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from pwrite. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from lseek. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from fsync. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from fstat. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from fchmod. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from fchown. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from ftruncate. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from lock. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from kernel_flock. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from linux_setlease. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from getlock. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from sys_acl_get_fd. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from fchmod_acl. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from sys_acl_set_fd. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from fgetxattr. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from flistxattr. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from fremovexattr. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from fsetxattr. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from aio_cancel. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from read. - obnox */
/* Leave at 22 - not yet released. Remove parameter fd from write. - obnox */
/* Leave at 22 - not yet released. Remove parameter fromfd from sendfile. - obnox */
/* Leave at 22 - not yet released. Remove parameter fromfd from recvfile. - obnox */
/* Leave at 22 - not yet released. Additional change: add operations for offline files -- ab */
/* Leave at 22 - not yet released. Add the streaminfo call. -- jpeach, vl */
/* Leave at 22 - not yet released. Remove parameter fd from close_fn. - obnox */
/* Changed to version 23 - remove set_nt_acl call. This can only be done via an
   open handle. JRA. */
/* Changed to version 24 - make security descriptor const in fset_nt_acl. JRA. */
/* Changed to version 25 - Jelmer's change from SMB_BIG_UINT to uint64_t. */
/* Leave at 25 - not yet released. Add create_file call. -- tprouty. */
/* Leave at 25 - not yet released. Add create time to ntimes. -- tstecher. */
/* Leave at 25 - not yet released. Add get_alloc_size call. -- tprouty. */
/* Leave at 25 - not yet released. Add SMB_STRUCT_STAT to readdir. - sdann */
/* Leave at 25 - not yet released. Add init_search_op call. - sdann */
/* Leave at 25 - not yet released. Add locking calls. -- zkirsch. */
/* Leave at 25 - not yet released. Add strict locking calls. -- drichards. */
/* Changed to version 26 - Plumb struct smb_filename to SMB_VFS_CREATE_FILE,
                           SMB_VFS_OPEN, SMB_VFS_STAT, SMB_VFS_LSTAT,
                           SMB_VFS_RENAME, SMB_VFS_UNLINK, SMB_VFS_NTIMES.  */
/* Changed to version 27 - not yet released. Added enum timestamp_set_resolution
 *                         return to fs_capabilities call. JRA. */
/* Leave at 27 - not yet released. Add translate_name VFS call to convert
                 UNIX names to Windows supported names -- asrinivasan. */
/* Changed to version 28 - Add private_flags uint32_t to CREATE call. */
/* Leave at 28 - not yet released. Change realpath to assume NULL and return a
                 malloc'ed path. JRA. */
/* Leave at 28 - not yet released. Move posix_fallocate into the VFS
                where it belongs. JRA. */
/* Leave at 28 - not yet released. Rename posix_fallocate to fallocate
                to split out the two possible uses. JRA. */
/* Leave at 28 - not yet released. Add fdopendir. JRA. */
/* Leave at 28 - not yet released. Rename open function to open_fn. - gd */
/* Leave at 28 - not yet released. Make getwd function always return malloced memory. JRA. */
/* Bump to version 29 - Samba 3.6.0 will ship with interface version 28. */
/* Leave at 29 - not yet releases. Add fsctl. Richard Sharpe */
/* Leave at 29 - not yet released. add SMB_VFS_GET_DFS_REFERRAL() - metze */
/* Leave at 29 - not yet released. Remove l{list,get,set,remove}xattr - abartlet */
/* Leave at 29 - not yet released. move to plain off_t - abartlet */
/* Leave at 29 - not yet released. Remove sys_acl functions other than set and get - abartlet */
/* Leave at 29 - not yet released. Added backup_intent bool to files_struct - JRA */
/* Leave at 29 - not yet released. Add durable handle functions - metze/obnox */
/* Leave at 29 - not yet released. Added sys_acl_blob_get_file and sys_acl_blob_get_fd */
/* Bump to version 30 - Samba 4.0.0 will ship with interface version 30 */
/* Leave at 30 - not yet released. Added conn->cwd to save vfs_GetWd() calls. */
/* Leave at 30 - not yet released. Changed sys_acl_blob_get_file interface to remove type */
/* Bump to version 31 - Samba 4.1.0 will ship with interface version 31 */
/* Leave at 31 - not yet released. Make struct vuid_cache_entry in
                connection_struct a pointer. */
/* Leave at 31 - not yet released. Add share_access to vuid_cache_entry. */

#define SMB_VFS_INTERFACE_VERSION 31

/*
    All intercepted VFS operations must be declared as static functions inside module source
    in order to keep smbd namespace unpolluted. See source of audit, extd_audit, fake_perms and recycle
    example VFS modules for more details.
*/

/* VFS operations structure */

struct vfs_handle_struct;
struct connection_struct;
struct files_struct;
struct security_descriptor;
struct vfs_statvfs_struct;
struct smb_request;
struct ea_list;
struct smb_file_time;
struct blocking_lock_record;
struct smb_filename;
struct dfs_GetDFSReferral;

typedef union unid_t {
        uid_t uid;
        gid_t gid;
} unid_t;

struct fd_handle {
        size_t ref_count;
        int fd;
        uint64_t position_information;
        off_t pos;
        uint32 private_options; /* NT Create options, but we only look at
                                 * NTCREATEX_OPTIONS_PRIVATE_DENY_DOS and
                                 * NTCREATEX_OPTIONS_PRIVATE_DENY_FCB and
                                 * NTCREATEX_OPTIONS_PRIVATE_DELETE_ON_CLOSE
                                 * for print files *only*, where
                                 * DELETE_ON_CLOSE is not stored in the share
                                 * mode database.
                                 */
        unsigned long gen_id;
};

typedef struct files_struct {
        struct files_struct *next, *prev;
        uint64_t fnum;
        struct smbXsrv_open *op;
        struct connection_struct *conn;
        struct fd_handle *fh;
        unsigned int num_smb_operations;
        struct file_id file_id;
        uint64_t initial_allocation_size; /* Faked up initial allocation on disk. */
        uint16 file_pid;
        uint64_t vuid; /* SMB2 compat */
        struct write_cache *wcp;
        struct timeval open_time;
        uint32 access_mask;             /* NTCreateX access bits (FILE_READ_DATA etc.) */
        uint32 share_access;            /* NTCreateX share constants (FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE). */

        bool update_write_time_triggered;
        struct timed_event *update_write_time_event;
        bool update_write_time_on_close;
        struct timespec close_write_time;
        bool write_time_forced;

        int oplock_type;
        int sent_oplock_break;
        struct timed_event *oplock_timeout;
        struct lock_struct last_lock_failure;
        int current_lock_count; /* Count the number of outstanding locks and pending locks. */

        struct share_mode_entry *pending_break_messages;
        int num_pending_break_messages;

        bool can_lock;
        bool can_read;
        bool can_write;
        bool modified;
        bool is_directory;
        bool aio_write_behind;
        bool lockdb_clean;
        bool initial_delete_on_close; /* Only set at NTCreateX if file was created. */
        bool delete_on_close;
        bool posix_open;
        bool is_sparse;
        bool backup_intent; /* Handle was successfully opened with backup intent
                                and opener has privilege to do so. */
        struct smb_filename *fsp_name;
        uint32_t name_hash;             /* Jenkins hash of full pathname. */
        uint64_t mid;                   /* Mid of the operation that created us. */

        struct vfs_fsp_data *vfs_extension;
        struct fake_file_handle *fake_file_handle;

        struct notify_change_buf *notify;

        struct files_struct *base_fsp; /* placeholder for delete on close */

        /*
         * Read-only cached brlock record, thrown away when the
         * brlock.tdb seqnum changes. This avoids fetching data from
         * the brlock.tdb on every read/write call.
         */
        int brlock_seqnum;
        struct byte_range_lock *brlock_rec;

        struct dptr_struct *dptr;

        /* if not NULL, means this is a print file */
        struct print_file_data *print_file;

        unsigned num_aio_requests;
        struct tevent_req **aio_requests;

        /*
         * If a close request comes in while we still have aio_requests
         * around, we need to hold back the close. When all aio_requests are
         * done, the aio completion routines need tevent_wait_done() on
         * this. A bit ugly, but before we have close_file() fully async
         * possibly the simplest approach. Thanks, Jeremy for the idea.
         */
        struct tevent_req *deferred_close;
} files_struct;

struct vuid_cache_entry {
        struct auth_session_info *session_info;
        uint64_t vuid; /* SMB2 compat */
        bool read_only;
        uint32_t share_access;
};

struct vuid_cache {
        unsigned int next_entry;
        struct vuid_cache_entry array[VUID_CACHE_SIZE];
};

typedef struct {
        char *name;
        bool is_wild;
} name_compare_entry;

struct dfree_cached_info {
        time_t last_dfree_time;
        uint64_t dfree_ret;
        uint64_t bsize;
        uint64_t dfree;
        uint64_t dsize;
};

struct share_params {
        int service;
};

typedef struct connection_struct {
        struct connection_struct *next, *prev;
        struct smbd_server_connection *sconn; /* can be NULL */
        struct smbXsrv_tcon *tcon; /* can be NULL */
        uint32_t cnum; /* an index passed over the wire */
        struct share_params *params;
        bool force_user;
        struct vuid_cache *vuid_cache;
        bool printer;
        bool ipc;
        bool read_only; /* Attributes for the current user of the share. */
        uint32_t share_access;
        /* Does this filesystem honor
           sub second timestamps on files
           and directories when setting time ? */
        enum timestamp_set_resolution ts_res;
        char *connectpath;
        char *origpath;
        char *cwd; /* Working directory. */

        struct vfs_handle_struct *vfs_handles;          /* for the new plugins */

        /*
         * This represents the user information on this connection. Depending
         * on the vuid using this tid, this might change per SMB request.
         */
        struct auth_session_info *session_info;

        /*
         * If the "force group" parameter is set, this is the primary gid that
         * may be used in the users token, depending on the vuid using this tid.
         */
        gid_t force_group_gid;

        uint64_t vuid; /* vuid of user who *opened* this connection, or UID_FIELD_INVALID */

        time_t lastused;
        time_t lastused_count;
        int num_files_open;
        unsigned int num_smb_operations; /* Count of smb operations on this tree. */
        int encrypt_level;
        bool encrypted_tid;

        /* Semantics requested by the client or forced by the server config. */
        bool case_sensitive;
        bool case_preserve;
        bool short_case_preserve;

        /* Semantics provided by the underlying filesystem. */
        int fs_capabilities;
        /* Device number of the directory of the share mount.
           Used to ensure unique FileIndex returns. */
        SMB_DEV_T base_share_dev;

        name_compare_entry *hide_list; /* Per-share list of files to return as hidden. */
        name_compare_entry *veto_list; /* Per-share list of files to veto (never show). */
        name_compare_entry *veto_oplock_list; /* Per-share list of files to refuse oplocks on. */       
        name_compare_entry *aio_write_behind_list; /* Per-share list of files to use aio write behind on. */       
        struct dfree_cached_info *dfree_info;
        struct trans_state *pending_trans;

        struct rpc_pipe_client *spoolss_pipe;

} connection_struct;

struct smbd_smb2_request;
struct privilege_paths;

struct smb_request {
        uint8_t cmd;
        uint16 flags2;
        uint16 smbpid;
        uint64_t mid; /* For compatibility with SMB2. */
        uint32_t seqnum;
        uint64_t vuid; /* For compatibility with SMB2. */
        uint32_t tid;
        uint8  wct;
        const uint16_t *vwv;
        uint16_t buflen;
        const uint8_t *buf;
        const uint8 *inbuf;

        /*
         * Async handling in the main smb processing loop is directed by
         * outbuf: reply_xxx routines indicate sync behaviour by putting their
         * reply into "outbuf". If they leave it as NULL, they take care of it
         * themselves, possibly later.
         *
         * If async handling is wanted, the reply_xxx routine must make sure
         * that it talloc_move()s the smb_req somewhere else.
         */
        uint8 *outbuf;

        size_t unread_bytes;
        bool encrypted;
        connection_struct *conn;
        struct smbd_server_connection *sconn;
        struct smb_perfcount_data pcd;

        /*
         * Chained request handling
         */
        struct files_struct *chain_fsp;

        /*
         * state information for async smb handling
         */
        void *async_priv;

        /*
         * Back pointer to smb2 request.
         */
        struct smbd_smb2_request *smb2req;

        /*
         * Pathnames used if request done
         * under privilege.
         */
        struct privilege_paths *priv_paths;

        /*
         * Request list for chained requests, we're part of it.
         */
        struct smb_request **chain;

        struct timeval request_time;
};

/*
 * Info about an alternate data stream
 */

struct stream_struct {
        off_t size;
        off_t alloc_size;
        char *name;
};

/* time info */
struct smb_file_time {
        struct timespec mtime;
        struct timespec atime;
        struct timespec ctime;
        struct timespec create_time;
};

/*
 * smb_filename
 */
struct smb_filename {
        char *base_name;
        char *stream_name;
        char *original_lcomp;
        SMB_STRUCT_STAT st;
};

#define VFS_FIND(__fn__) while (handle->fns->__fn__##_fn==NULL) { \
                                handle = handle->next; \
                         }

enum vfs_translate_direction {
        vfs_translate_to_unix = 0,
        vfs_translate_to_windows
};

enum vfs_fallocate_mode {
        VFS_FALLOCATE_EXTEND_SIZE = 0,
        VFS_FALLOCATE_KEEP_SIZE = 1
};

/*
    Available VFS operations. These values must be in sync with vfs_ops struct
    (struct vfs_fn_pointers and struct vfs_handle_pointers inside of struct vfs_ops).
    In particular, if new operations are added to vfs_ops, appropriate constants
    should be added to vfs_op_type so that order of them kept same as in vfs_ops.
*/
struct shadow_copy_data;

struct vfs_fn_pointers {
        /* Disk operations */

        int (*connect_fn)(struct vfs_handle_struct *handle, const char *service, const char *user);
        void (*disconnect_fn)(struct vfs_handle_struct *handle);
        uint64_t (*disk_free_fn)(struct vfs_handle_struct *handle, const char *path, bool small_query, uint64_t *bsize,
                              uint64_t *dfree, uint64_t *dsize);
        int (*get_quota_fn)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
        int (*set_quota_fn)(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt);
        int (*get_shadow_copy_data_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, struct shadow_copy_data *shadow_copy_data, bool labels);
        int (*statvfs_fn)(struct vfs_handle_struct *handle, const char *path, struct vfs_statvfs_struct *statbuf);
        uint32_t (*fs_capabilities_fn)(struct vfs_handle_struct *handle, enum timestamp_set_resolution *p_ts_res);

        /*
         * Note: that "struct dfs_GetDFSReferral *r"
         * needs to be a valid TALLOC_CTX
         */
        NTSTATUS (*get_dfs_referrals_fn)(struct vfs_handle_struct *handle,
                                         struct dfs_GetDFSReferral *r);

        /* Directory operations */

        DIR *(*opendir_fn)(struct vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attributes);
        DIR *(*fdopendir_fn)(struct vfs_handle_struct *handle, files_struct *fsp, const char *mask, uint32 attributes);
        struct dirent *(*readdir_fn)(struct vfs_handle_struct *handle,
                                         DIR *dirp,
                                         SMB_STRUCT_STAT *sbuf);
        void (*seekdir_fn)(struct vfs_handle_struct *handle, DIR *dirp, long offset);
        long (*telldir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
        void (*rewind_dir_fn)(struct vfs_handle_struct *handle, DIR *dirp);
        int (*mkdir_fn)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
        int (*rmdir_fn)(struct vfs_handle_struct *handle, const char *path);
        int (*closedir_fn)(struct vfs_handle_struct *handle, DIR *dir);
        void (*init_search_op_fn)(struct vfs_handle_struct *handle, DIR *dirp);

        /* File operations */

        int (*open_fn)(struct vfs_handle_struct *handle,
                       struct smb_filename *smb_fname, files_struct *fsp,
                       int flags, mode_t mode);
        NTSTATUS (*create_file_fn)(struct vfs_handle_struct *handle,
                                   struct smb_request *req,
                                   uint16_t root_dir_fid,
                                   struct smb_filename *smb_fname,
                                   uint32_t access_mask,
                                   uint32_t share_access,
                                   uint32_t create_disposition,
                                   uint32_t create_options,
                                   uint32_t file_attributes,
                                   uint32_t oplock_request,
                                   uint64_t allocation_size,
                                   uint32_t private_flags,
                                   struct security_descriptor *sd,
                                   struct ea_list *ea_list,
                                   files_struct **result,
                                   int *pinfo);
        int (*close_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
        ssize_t (*read_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n);
        ssize_t (*pread_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, void *data, size_t n, off_t offset);
        struct tevent_req *(*pread_send_fn)(struct vfs_handle_struct *handle,
                                            TALLOC_CTX *mem_ctx,
                                            struct tevent_context *ev,
                                            struct files_struct *fsp,
                                            void *data,
                                            size_t n, off_t offset);
        ssize_t (*pread_recv_fn)(struct tevent_req *req, int *err);
        ssize_t (*write_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n);
        ssize_t (*pwrite_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const void *data, size_t n, off_t offset);
        struct tevent_req *(*pwrite_send_fn)(struct vfs_handle_struct *handle,
                                             TALLOC_CTX *mem_ctx,
                                             struct tevent_context *ev,
                                             struct files_struct *fsp,
                                             const void *data,
                                             size_t n, off_t offset);
        ssize_t (*pwrite_recv_fn)(struct tevent_req *req, int *err);
        off_t (*lseek_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset, int whence);
        ssize_t (*sendfile_fn)(struct vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *header, off_t offset, size_t count);
        ssize_t (*recvfile_fn)(struct vfs_handle_struct *handle, int fromfd, files_struct *tofsp, off_t offset, size_t count);
        int (*rename_fn)(struct vfs_handle_struct *handle,
                         const struct smb_filename *smb_fname_src,
                         const struct smb_filename *smb_fname_dst);
        int (*fsync_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);
        struct tevent_req *(*fsync_send_fn)(struct vfs_handle_struct *handle,
                                            TALLOC_CTX *mem_ctx,
                                            struct tevent_context *ev,
                                            struct files_struct *fsp);
        int (*fsync_recv_fn)(struct tevent_req *req, int *err);
        int (*stat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_fname);
        int (*fstat_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
        int (*lstat_fn)(struct vfs_handle_struct *handle, struct smb_filename *smb_filename);
        uint64_t (*get_alloc_size_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const SMB_STRUCT_STAT *sbuf);
        int (*unlink_fn)(struct vfs_handle_struct *handle,
                         const struct smb_filename *smb_fname);
        int (*chmod_fn)(struct vfs_handle_struct *handle, const char *path, mode_t mode);
        int (*fchmod_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);
        int (*chown_fn)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
        int (*fchown_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, uid_t uid, gid_t gid);
        int (*lchown_fn)(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid);
        int (*chdir_fn)(struct vfs_handle_struct *handle, const char *path);
        char *(*getwd_fn)(struct vfs_handle_struct *handle);
        int (*ntimes_fn)(struct vfs_handle_struct *handle,
                         const struct smb_filename *smb_fname,
                         struct smb_file_time *ft);
        int (*ftruncate_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t offset);
        int (*fallocate_fn)(struct vfs_handle_struct *handle,
                            struct files_struct *fsp,
                            enum vfs_fallocate_mode mode,
                            off_t offset,
                            off_t len);
        bool (*lock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int op, off_t offset, off_t count, int type);
        int (*kernel_flock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp,
                               uint32 share_mode, uint32_t access_mask);
        int (*linux_setlease_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, int leasetype);
        bool (*getlock_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid);
        int (*symlink_fn)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
        int (*readlink_fn)(struct vfs_handle_struct *handle, const char *path, char *buf, size_t bufsiz);
        int (*link_fn)(struct vfs_handle_struct *handle, const char *oldpath, const char *newpath);
        int (*mknod_fn)(struct vfs_handle_struct *handle, const char *path, mode_t mode, SMB_DEV_T dev);
        char *(*realpath_fn)(struct vfs_handle_struct *handle, const char *path);
        NTSTATUS (*notify_watch_fn)(struct vfs_handle_struct *handle,
                                    struct sys_notify_context *ctx,
                                    const char *path,
                                    uint32_t *filter,
                                    uint32_t *subdir_filter,
                                    void (*callback)(struct sys_notify_context *ctx,
                                                     void *private_data,
                                                     struct notify_event *ev),
                                    void *private_data, 
                                    void *handle_p);
        int (*chflags_fn)(struct vfs_handle_struct *handle, const char *path, unsigned int flags);
        struct file_id (*file_id_create_fn)(struct vfs_handle_struct *handle,
                                            const SMB_STRUCT_STAT *sbuf);

        NTSTATUS (*streaminfo_fn)(struct vfs_handle_struct *handle,
                                  struct files_struct *fsp,
                                  const char *fname,
                                  TALLOC_CTX *mem_ctx,
                                  unsigned int *num_streams,
                                  struct stream_struct **streams);

        int (*get_real_filename_fn)(struct vfs_handle_struct *handle,
                                    const char *path,
                                    const char *name,
                                    TALLOC_CTX *mem_ctx,
                                    char **found_name);

        const char *(*connectpath_fn)(struct vfs_handle_struct *handle,
                                      const char *filename);

        NTSTATUS (*brl_lock_windows_fn)(struct vfs_handle_struct *handle,
                                        struct byte_range_lock *br_lck,
                                        struct lock_struct *plock,
                                        bool blocking_lock,
                                        struct blocking_lock_record *blr);

        bool (*brl_unlock_windows_fn)(struct vfs_handle_struct *handle,
                                      struct messaging_context *msg_ctx,
                                      struct byte_range_lock *br_lck,
                                      const struct lock_struct *plock);

        bool (*brl_cancel_windows_fn)(struct vfs_handle_struct *handle,
                                      struct byte_range_lock *br_lck,
                                      struct lock_struct *plock,
                                      struct blocking_lock_record *blr);

        bool (*strict_lock_fn)(struct vfs_handle_struct *handle,
                               struct files_struct *fsp,
                               struct lock_struct *plock);

        void (*strict_unlock_fn)(struct vfs_handle_struct *handle,
                                 struct files_struct *fsp,
                                 struct lock_struct *plock);

        NTSTATUS (*translate_name_fn)(struct vfs_handle_struct *handle,
                                      const char *name,
                                      enum vfs_translate_direction direction,
                                      TALLOC_CTX *mem_ctx,
                                      char **mapped_name);

        NTSTATUS (*fsctl_fn)(struct vfs_handle_struct *handle,
                             struct files_struct *fsp,
                             TALLOC_CTX *ctx,
                             uint32_t function,
                             uint16_t req_flags,
                             const uint8_t *_in_data,
                             uint32_t in_len,
                             uint8_t **_out_data,
                             uint32_t max_out_len,
                             uint32_t *out_len); 

        /* NT ACL operations. */

        NTSTATUS (*fget_nt_acl_fn)(struct vfs_handle_struct *handle,
                                   struct files_struct *fsp,
                                   uint32 security_info,
                                   TALLOC_CTX *mem_ctx,
                                   struct security_descriptor **ppdesc);
        NTSTATUS (*get_nt_acl_fn)(struct vfs_handle_struct *handle,
                                  const char *name,
                                  uint32 security_info,
                                   TALLOC_CTX *mem_ctx,
                                  struct security_descriptor **ppdesc);
        NTSTATUS (*fset_nt_acl_fn)(struct vfs_handle_struct *handle,
                                   struct files_struct *fsp,
                                   uint32 security_info_sent,
                                   const struct security_descriptor *psd);

        NTSTATUS (*audit_file_fn)(struct vfs_handle_struct *handle,
                                  struct smb_filename *file,
                                  struct security_acl *sacl,
                                  uint32_t access_requested,
                                  uint32_t access_denied);

        /* POSIX ACL operations. */

        int (*chmod_acl_fn)(struct vfs_handle_struct *handle, const char *name, mode_t mode);
        int (*fchmod_acl_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, mode_t mode);

        SMB_ACL_T (*sys_acl_get_file_fn)(struct vfs_handle_struct *handle,
                                         const char *path_p,
                                         SMB_ACL_TYPE_T type,
                                         TALLOC_CTX *mem_ctx);
        SMB_ACL_T (*sys_acl_get_fd_fn)(struct vfs_handle_struct *handle,
                                       struct files_struct *fsp,
                                       TALLOC_CTX *mem_ctx);
        int (*sys_acl_blob_get_file_fn)(struct vfs_handle_struct *handle,
                                        const char *path_p,
                                        TALLOC_CTX *mem_ctx,
                                        char **blob_description,
                                        DATA_BLOB *blob);
        int (*sys_acl_blob_get_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp,
                                      TALLOC_CTX *mem_ctx, char **blob_description,
                                      DATA_BLOB *blob);
        int (*sys_acl_set_file_fn)(struct vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
        int (*sys_acl_set_fd_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_ACL_T theacl);
        int (*sys_acl_delete_def_file_fn)(struct vfs_handle_struct *handle, const char *path);

        /* EA operations. */
        ssize_t (*getxattr_fn)(struct vfs_handle_struct *handle,const char *path, const char *name, void *value, size_t size);
        ssize_t (*fgetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, void *value, size_t size);
        ssize_t (*listxattr_fn)(struct vfs_handle_struct *handle, const char *path, char *list, size_t size);
        ssize_t (*flistxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size);
        int (*removexattr_fn)(struct vfs_handle_struct *handle, const char *path, const char *name);
        int (*fremovexattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name);
        int (*setxattr_fn)(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags);
        int (*fsetxattr_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags);

        /* aio operations */
        bool (*aio_force_fn)(struct vfs_handle_struct *handle, struct files_struct *fsp);

        /* offline operations */
        bool (*is_offline_fn)(struct vfs_handle_struct *handle,
                           const struct smb_filename *fname,
                           SMB_STRUCT_STAT *sbuf);
        int (*set_offline_fn)(struct vfs_handle_struct *handle,
                           const struct smb_filename *fname);

        /* durable handle operations */
        NTSTATUS (*durable_cookie_fn)(struct vfs_handle_struct *handle,
                                      struct files_struct *fsp,
                                      TALLOC_CTX *mem_ctx,
                                      DATA_BLOB *cookie);
        NTSTATUS (*durable_disconnect_fn)(struct vfs_handle_struct *handle,
                                          struct files_struct *fsp,
                                          const DATA_BLOB old_cookie,
                                          TALLOC_CTX *mem_ctx,
                                          DATA_BLOB *new_cookie);
        NTSTATUS (*durable_reconnect_fn)(struct vfs_handle_struct *handle,
                                         struct smb_request *smb1req,
                                         struct smbXsrv_open *op,
                                         const DATA_BLOB old_cookie,
                                         TALLOC_CTX *mem_ctx,
                                         struct files_struct **fsp,
                                         DATA_BLOB *new_cookie);
};

/*
    VFS operation description. Each VFS module registers an array of vfs_op_tuple to VFS subsystem,
    which describes all operations this module is willing to intercept.
    VFS subsystem initializes then the conn->vfs_ops and conn->vfs_opaque_ops structs
    using this information.
*/

typedef struct vfs_handle_struct {
        struct vfs_handle_struct  *next, *prev;
        const char *param;
        struct connection_struct *conn;
        const struct vfs_fn_pointers *fns;
        void *data;
        void (*free_data)(void **data);
} vfs_handle_struct;


typedef struct vfs_statvfs_struct {
        /* For undefined recommended transfer size return -1 in that field */
        uint32 OptimalTransferSize;  /* bsize on some os, iosize on other os */
        uint32 BlockSize;

        /*
         The next three fields are in terms of the block size.
         (above). If block size is unknown, 4096 would be a
         reasonable block size for a server to report.
         Note that returning the blocks/blocksavail removes need
         to make a second call (to QFSInfo level 0x103 to get this info.
         UserBlockAvail is typically less than or equal to BlocksAvail,
         if no distinction is made return the same value in each.
        */

        uint64_t TotalBlocks;
        uint64_t BlocksAvail;       /* bfree */
        uint64_t UserBlocksAvail;   /* bavail */

        /* For undefined Node fields or FSID return -1 */
        uint64_t TotalFileNodes;
        uint64_t FreeFileNodes;
        uint64_t FsIdentifier;   /* fsid */
        /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
        /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call   */

        int FsCapabilities;
} vfs_statvfs_struct;

/* Add a new FSP extension of the given type. Returns a pointer to the
 * extenstion data.
 */
#define VFS_ADD_FSP_EXTENSION(handle, fsp, type, destroy_fn)            \
    vfs_add_fsp_extension_notype(handle, (fsp), sizeof(type), (destroy_fn))

/* Return a pointer to the existing FSP extension data. */
#define VFS_FETCH_FSP_EXTENSION(handle, fsp) \
    vfs_fetch_fsp_extension(handle, (fsp))

/* Return the talloc context associated with an FSP extension. */
#define VFS_MEMCTX_FSP_EXTENSION(handle, fsp) \
    vfs_memctx_fsp_extension(handle, (fsp))

/* Remove and destroy an FSP extension. */
#define VFS_REMOVE_FSP_EXTENSION(handle, fsp) \
    vfs_remove_fsp_extension((handle), (fsp))

#define SMB_VFS_HANDLE_GET_DATA(handle, datap, type, ret) { \
        if (!(handle)||((datap=(type *)(handle)->data)==NULL)) { \
                DEBUG(0,("%s() failed to get vfs_handle->data!\n",__FUNCTION__)); \
                ret; \
        } \
}

#define SMB_VFS_HANDLE_SET_DATA(handle, datap, free_fn, type, ret) { \
        if (!(handle)) { \
                DEBUG(0,("%s() failed to set handle->data!\n",__FUNCTION__)); \
                ret; \
        } else { \
                if ((handle)->free_data) { \
                        (handle)->free_data(&(handle)->data); \
                } \
                (handle)->data = (void *)datap; \
                (handle)->free_data = free_fn; \
        } \
}

#define SMB_VFS_HANDLE_FREE_DATA(handle) { \
        if ((handle) && (handle)->free_data) { \
                (handle)->free_data(&(handle)->data); \
        } \
}

/* Check whether module-specific data handle was already allocated or not */
#define SMB_VFS_HANDLE_TEST_DATA(handle)  ( !(handle) || !(handle)->data ? False : True )

#define SMB_VFS_OP(x) ((void *) x)

#define DEFAULT_VFS_MODULE_NAME "/[Default VFS]/"

#include "vfs_macros.h"

int smb_vfs_call_connect(struct vfs_handle_struct *handle,
                         const char *service, const char *user);
void smb_vfs_call_disconnect(struct vfs_handle_struct *handle);
uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
                                const char *path, bool small_query,
                                uint64_t *bsize, uint64_t *dfree,
                                uint64_t *dsize);
int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
                           enum SMB_QUOTA_TYPE qtype, unid_t id,
                           SMB_DISK_QUOTA *qt);
int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
                           enum SMB_QUOTA_TYPE qtype, unid_t id,
                           SMB_DISK_QUOTA *qt);
int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
                                      struct files_struct *fsp,
                                      struct shadow_copy_data *shadow_copy_data,
                                      bool labels);
int smb_vfs_call_statvfs(struct vfs_handle_struct *handle, const char *path,
                         struct vfs_statvfs_struct *statbuf);
uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle,
                                      enum timestamp_set_resolution *p_ts_res);
/*
 * Note: that "struct dfs_GetDFSReferral *r" needs to be a valid TALLOC_CTX
 */
NTSTATUS smb_vfs_call_get_dfs_referrals(struct vfs_handle_struct *handle,
                                        struct dfs_GetDFSReferral *r);
DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
                                     const char *fname, const char *mask,
                                     uint32 attributes);
DIR *smb_vfs_call_fdopendir(struct vfs_handle_struct *handle,
                                        struct files_struct *fsp,
                                        const char *mask,
                                        uint32 attributes);
struct dirent *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
                                        DIR *dirp,
                                        SMB_STRUCT_STAT *sbuf);
void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
                          DIR *dirp, long offset);
long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
                          DIR *dirp);
void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
                             DIR *dirp);
int smb_vfs_call_mkdir(struct vfs_handle_struct *handle, const char *path,
                       mode_t mode);
int smb_vfs_call_rmdir(struct vfs_handle_struct *handle, const char *path);
int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
                          DIR *dir);
void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
                                 DIR *dirp);
int smb_vfs_call_open(struct vfs_handle_struct *handle,
                      struct smb_filename *smb_fname, struct files_struct *fsp,
                      int flags, mode_t mode);
NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
                                  struct smb_request *req,
                                  uint16_t root_dir_fid,
                                  struct smb_filename *smb_fname,
                                  uint32_t access_mask,
                                  uint32_t share_access,
                                  uint32_t create_disposition,
                                  uint32_t create_options,
                                  uint32_t file_attributes,
                                  uint32_t oplock_request,
                                  uint64_t allocation_size,
                                  uint32_t private_flags,
                                  struct security_descriptor *sd,
                                  struct ea_list *ea_list,
                                  files_struct **result,
                                  int *pinfo);
int smb_vfs_call_close(struct vfs_handle_struct *handle,
                       struct files_struct *fsp);
ssize_t smb_vfs_call_read(struct vfs_handle_struct *handle,
                          struct files_struct *fsp, void *data, size_t n);
ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
                           struct files_struct *fsp, void *data, size_t n,
                           off_t offset);
struct tevent_req *smb_vfs_call_pread_send(struct vfs_handle_struct *handle,
                                           TALLOC_CTX *mem_ctx,
                                           struct tevent_context *ev,
                                           struct files_struct *fsp,
                                           void *data,
                                           size_t n, off_t offset);
ssize_t SMB_VFS_PREAD_RECV(struct tevent_req *req, int *perrno);

ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
                           struct files_struct *fsp, const void *data,
                           size_t n);
ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
                            struct files_struct *fsp, const void *data,
                            size_t n, off_t offset);
struct tevent_req *smb_vfs_call_pwrite_send(struct vfs_handle_struct *handle,
                                            TALLOC_CTX *mem_ctx,
                                            struct tevent_context *ev,
                                            struct files_struct *fsp,
                                            const void *data,
                                            size_t n, off_t offset);
ssize_t SMB_VFS_PWRITE_RECV(struct tevent_req *req, int *perrno);

off_t smb_vfs_call_lseek(struct vfs_handle_struct *handle,
                             struct files_struct *fsp, off_t offset,
                             int whence);
ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
                              files_struct *fromfsp, const DATA_BLOB *header,
                              off_t offset, size_t count);
ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
                              files_struct *tofsp, off_t offset,
                              size_t count);
int smb_vfs_call_rename(struct vfs_handle_struct *handle,
                        const struct smb_filename *smb_fname_src,
                        const struct smb_filename *smb_fname_dst);
int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
                       struct files_struct *fsp);

struct tevent_req *smb_vfs_call_fsync_send(struct vfs_handle_struct *handle,
                                           TALLOC_CTX *mem_ctx,
                                           struct tevent_context *ev,
                                           struct files_struct *fsp);
int SMB_VFS_FSYNC_RECV(struct tevent_req *req, int *perrno);

int smb_vfs_call_stat(struct vfs_handle_struct *handle,
                      struct smb_filename *smb_fname);
int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
                       struct files_struct *fsp, SMB_STRUCT_STAT *sbuf);
int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
                       struct smb_filename *smb_filename);
uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
                                     struct files_struct *fsp,
                                     const SMB_STRUCT_STAT *sbuf);
int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
                        const struct smb_filename *smb_fname);
int smb_vfs_call_chmod(struct vfs_handle_struct *handle, const char *path,
                       mode_t mode);
int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
                        struct files_struct *fsp, mode_t mode);
int smb_vfs_call_chown(struct vfs_handle_struct *handle, const char *path,
                       uid_t uid, gid_t gid);
int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
                        struct files_struct *fsp, uid_t uid, gid_t gid);
int smb_vfs_call_lchown(struct vfs_handle_struct *handle, const char *path,
                        uid_t uid, gid_t gid);
int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path);
char *smb_vfs_call_getwd(struct vfs_handle_struct *handle);
int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
                        const struct smb_filename *smb_fname,
                        struct smb_file_time *ft);
int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
                           struct files_struct *fsp, off_t offset);
int smb_vfs_call_fallocate(struct vfs_handle_struct *handle,
                        struct files_struct *fsp,
                        enum vfs_fallocate_mode mode,
                        off_t offset,
                        off_t len);
bool smb_vfs_call_lock(struct vfs_handle_struct *handle,
                       struct files_struct *fsp, int op, off_t offset,
                       off_t count, int type);
int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
                              struct files_struct *fsp, uint32 share_mode,
                              uint32_t access_mask);
int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
                                struct files_struct *fsp, int leasetype);
bool smb_vfs_call_getlock(struct vfs_handle_struct *handle,
                          struct files_struct *fsp, off_t *poffset,
                          off_t *pcount, int *ptype, pid_t *ppid);
int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
                         const char *newpath);
int smb_vfs_call_readlink(struct vfs_handle_struct *handle,
                          const char *path, char *buf, size_t bufsiz);
int smb_vfs_call_link(struct vfs_handle_struct *handle, const char *oldpath,
                      const char *newpath);
int smb_vfs_call_mknod(struct vfs_handle_struct *handle, const char *path,
                       mode_t mode, SMB_DEV_T dev);
char *smb_vfs_call_realpath(struct vfs_handle_struct *handle, const char *path);
NTSTATUS smb_vfs_call_notify_watch(struct vfs_handle_struct *handle,
                                   struct sys_notify_context *ctx,
                                   const char *name,
                                   uint32_t *filter,
                                   uint32_t *subdir_filter,
                                   void (*callback)(struct sys_notify_context *ctx,
                                                    void *private_data,
                                                    struct notify_event *ev),
                                   void *private_data, void *handle_p);
int smb_vfs_call_chflags(struct vfs_handle_struct *handle, const char *path,
                         unsigned int flags);
struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
                                           const SMB_STRUCT_STAT *sbuf);
NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
                                 struct files_struct *fsp,
                                 const char *fname,
                                 TALLOC_CTX *mem_ctx,
                                 unsigned int *num_streams,
                                 struct stream_struct **streams);
int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
                                   const char *path, const char *name,
                                   TALLOC_CTX *mem_ctx, char **found_name);
const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
                                     const char *filename);
NTSTATUS smb_vfs_call_brl_lock_windows(struct vfs_handle_struct *handle,
                                       struct byte_range_lock *br_lck,
                                       struct lock_struct *plock,
                                       bool blocking_lock,
                                       struct blocking_lock_record *blr);
bool smb_vfs_call_brl_unlock_windows(struct vfs_handle_struct *handle,
                                     struct messaging_context *msg_ctx,
                                     struct byte_range_lock *br_lck,
                                     const struct lock_struct *plock);
bool smb_vfs_call_brl_cancel_windows(struct vfs_handle_struct *handle,
                                     struct byte_range_lock *br_lck,
                                     struct lock_struct *plock,
                                     struct blocking_lock_record *blr);
bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
                              struct files_struct *fsp,
                              struct lock_struct *plock);
void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
                                struct files_struct *fsp,
                                struct lock_struct *plock);
NTSTATUS smb_vfs_call_translate_name(struct vfs_handle_struct *handle,
                                     const char *name,
                                     enum vfs_translate_direction direction,
                                     TALLOC_CTX *mem_ctx,
                                     char **mapped_name);
NTSTATUS smb_vfs_call_fsctl(struct vfs_handle_struct *handle,
                            struct files_struct *fsp,
                            TALLOC_CTX *ctx,
                            uint32_t function,
                            uint16_t req_flags,
                            const uint8_t *_in_data,
                            uint32_t in_len,
                            uint8_t **_out_data,
                            uint32_t max_out_len,
                            uint32_t *out_len); 
NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
                                  struct files_struct *fsp,
                                  uint32 security_info,
                                  TALLOC_CTX *mem_ctx,
                                  struct security_descriptor **ppdesc);
NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
                                 const char *name,
                                 uint32 security_info,
                                 TALLOC_CTX *mem_ctx,
                                 struct security_descriptor **ppdesc);
NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
                                  struct files_struct *fsp,
                                  uint32 security_info_sent,
                                  const struct security_descriptor *psd);
NTSTATUS smb_vfs_call_audit_file(struct vfs_handle_struct *handle,
                                 struct smb_filename *file,
                                 struct security_acl *sacl,
                                 uint32_t access_requested,
                                 uint32_t access_denied);
int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle, const char *name,
                           mode_t mode);
int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
                            struct files_struct *fsp, mode_t mode);
SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
                                        const char *path_p,
                                        SMB_ACL_TYPE_T type,
                                        TALLOC_CTX *mem_ctx);
SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
                                      struct files_struct *fsp,
                                      TALLOC_CTX *mem_ctx);
int smb_vfs_call_sys_acl_blob_get_file(struct vfs_handle_struct *handle,
                                       const char *path_p,
                                       TALLOC_CTX *mem_ctx,
                                       char **blob_description,
                                       DATA_BLOB *blob);
int smb_vfs_call_sys_acl_blob_get_fd(struct vfs_handle_struct *handle,
                                     struct files_struct *fsp,  
                                     TALLOC_CTX *mem_ctx,
                                     char **blob_description,
                                     DATA_BLOB *blob);
int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
                                  const char *name, SMB_ACL_TYPE_T acltype,
                                  SMB_ACL_T theacl);
int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
                                struct files_struct *fsp, SMB_ACL_T theacl);
int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
                                         const char *path);
ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
                              const char *path, const char *name, void *value,
                              size_t size);
ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
                               struct files_struct *fsp, const char *name,
                               void *value, size_t size);
ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
                               const char *path, char *list, size_t size);
ssize_t smb_vfs_call_llistxattr(struct vfs_handle_struct *handle,
                                const char *path, char *list, size_t size);
ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
                                struct files_struct *fsp, char *list,
                                size_t size);
int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
                             const char *path, const char *name);
int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
                              struct files_struct *fsp, const char *name);
int smb_vfs_call_setxattr(struct vfs_handle_struct *handle, const char *path,
                          const char *name, const void *value, size_t size,
                          int flags);
int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
                           const char *name, const void *value, size_t size,
                           int flags);
int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
                           struct files_struct *fsp, const char *name,
                           const void *value, size_t size, int flags);
bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
                            struct files_struct *fsp);
bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
                             const struct smb_filename *fname,
                             SMB_STRUCT_STAT *sbuf);
int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
                             const struct smb_filename *fname);
NTSTATUS smb_vfs_call_durable_cookie(struct vfs_handle_struct *handle,
                                     struct files_struct *fsp,
                                     TALLOC_CTX *mem_ctx,
                                     DATA_BLOB *cookie);
NTSTATUS smb_vfs_call_durable_disconnect(struct vfs_handle_struct *handle,
                                         struct files_struct *fsp,
                                         const DATA_BLOB old_cookie,
                                         TALLOC_CTX *mem_ctx,
                                         DATA_BLOB *new_cookie);
NTSTATUS smb_vfs_call_durable_reconnect(struct vfs_handle_struct *handle,
                                        struct smb_request *smb1req,
                                        struct smbXsrv_open *op,
                                        const DATA_BLOB old_cookie,
                                        TALLOC_CTX *mem_ctx,
                                        struct files_struct **fsp,
                                        DATA_BLOB *new_cookie);

NTSTATUS smb_register_vfs(int version, const char *name,
                          const struct vfs_fn_pointers *fns);
void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
                                   files_struct *fsp, size_t ext_size,
                                   void (*destroy_fn)(void *p_data));
void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
void vfs_remove_all_fsp_extensions(struct files_struct *fsp);
void *vfs_memctx_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);
void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, files_struct *fsp);

#endif /* _VFS_H */