/**
 * Return file size
 * @param conn connection
 * @param fname file name
 * @return size in bytes
 **/
static SMB_OFF_T recycle_get_file_size(vfs_handle_struct *handle,
				       const struct smb_filename *smb_fname)
{
	struct smb_filename *smb_fname_tmp = NULL;
	NTSTATUS status;
	SMB_OFF_T size;

	status = copy_smb_filename(talloc_tos(), smb_fname, &smb_fname_tmp);
	if (!NT_STATUS_IS_OK(status)) {
		size = (SMB_OFF_T)0;
		goto out;
	}

	if (SMB_VFS_STAT(handle->conn, smb_fname_tmp) != 0) {
		DEBUG(0,("recycle: stat for %s returned %s\n",
			 smb_fname_str_dbg(smb_fname_tmp), strerror(errno)));
		size = (SMB_OFF_T)0;
		goto out;
	}

	size = smb_fname_tmp->st.st_ex_size;
 out:
	TALLOC_FREE(smb_fname_tmp);
	return size;
}

NTSTATUS set_create_timespec_ea(connection_struct *conn,
				const struct smb_filename *psmb_fname,
				struct timespec create_time)
{
	struct smb_filename *smb_fname;
	uint32_t dosmode;
	int ret;

	if (!lp_store_dos_attributes(SNUM(conn))) {
		return NT_STATUS_OK;
	}

	smb_fname = synthetic_smb_fname(talloc_tos(), psmb_fname->base_name,
					NULL, &psmb_fname->st);

	if (smb_fname == NULL) {
		return NT_STATUS_NO_MEMORY;
	}

	dosmode = dos_mode(conn, smb_fname);

	smb_fname->st.st_ex_btime = create_time;

	ret = file_set_dosmode(conn, smb_fname, dosmode, NULL, false);
	if (ret == -1) {
		map_nt_error_from_unix(errno);
	}

	DEBUG(10,("set_create_timespec_ea: wrote create time EA for file %s\n",
		smb_fname_str_dbg(smb_fname)));

	return NT_STATUS_OK;
}

NTSTATUS file_name_hash(connection_struct *conn,
			const char *name, uint32_t *p_name_hash)
{
	char tmpbuf[PATH_MAX];
	char *fullpath, *to_free;
	ssize_t len;
	TDB_DATA key;

	/* Set the hash of the full pathname. */

	len = full_path_tos(conn->connectpath, name, tmpbuf, sizeof(tmpbuf),
			    &fullpath, &to_free);
	if (len == -1) {
		return NT_STATUS_NO_MEMORY;
	}
	key = (TDB_DATA) { .dptr = (uint8_t *)fullpath, .dsize = len+1 };
	*p_name_hash = tdb_jenkins_hash(&key);

	DEBUG(10,("file_name_hash: %s hash 0x%x\n",
		  fullpath,
		(unsigned int)*p_name_hash ));

	TALLOC_FREE(to_free);
	return NT_STATUS_OK;
}

/**
 * The only way that the fsp->fsp_name field should ever be set.
 */
NTSTATUS fsp_set_smb_fname(struct files_struct *fsp,
			   const struct smb_filename *smb_fname_in)
{
	struct smb_filename *smb_fname_new;

	smb_fname_new = cp_smb_filename(fsp, smb_fname_in);
	if (smb_fname_new == NULL) {
		return NT_STATUS_NO_MEMORY;
	}

	TALLOC_FREE(fsp->fsp_name);
	fsp->fsp_name = smb_fname_new;

	return file_name_hash(fsp->conn,
			smb_fname_str_dbg(fsp->fsp_name),
			&fsp->name_hash);
}

const struct GUID *fsp_client_guid(const files_struct *fsp)
{
	return &fsp->conn->sconn->client->connections->smb2.client.guid;
}

uint32_t fsp_lease_type(struct files_struct *fsp)
{
	if (fsp->oplock_type == LEASE_OPLOCK) {
		return fsp->lease->lease.lease_state;
	}
	return map_oplock_to_lease_type(fsp->oplock_type);
}

NTSTATUS onefs_stream_prep_smb_fname(TALLOC_CTX *ctx,
				     const struct smb_filename *smb_fname_in,
				     struct smb_filename **smb_fname_out)
{
	char *stream_name = NULL;
	NTSTATUS status;

	/*
	 * Only attempt to strip off the trailing :$DATA if there is an actual
	 * stream there.  If it is the default stream, the smb_fname_out will
	 * just have a NULL stream so the base file is opened.
	 */
	if (smb_fname_in->stream_name &&
	    !is_ntfs_default_stream_smb_fname(smb_fname_in)) {
		char *str_tmp = smb_fname_in->stream_name;

		/* First strip off the leading ':' */
		if (str_tmp[0] == ':') {
			str_tmp++;
		}

		/* Create a new copy of the stream_name. */
		stream_name = talloc_strdup(ctx, str_tmp);
		if (stream_name == NULL) {
			return NT_STATUS_NO_MEMORY;
		}

		/* Strip off the :$DATA if one exists. */
		str_tmp = strrchr_m(stream_name, ':');
		if (str_tmp) {
			if (strcasecmp_m(str_tmp, ":$DATA") != 0) {
				return NT_STATUS_INVALID_PARAMETER;
			}
			str_tmp[0] = '\0';
		}
	}

	/*
	 * If there was a stream that wasn't the default stream the leading
	 * colon and trailing :$DATA has now been stripped off.  Create a new
	 * smb_filename to pass back.
	 */
	status = create_synthetic_smb_fname(ctx, smb_fname_in->base_name,
					    stream_name, &smb_fname_in->st,
					    smb_fname_out);
	TALLOC_FREE(stream_name);

	if (!NT_STATUS_IS_OK(status)) {
		DEBUG(5, ("Failed to prep stream name for %s: %s\n",
			  *smb_fname_out ?
			  smb_fname_str_dbg(*smb_fname_out) : "NULL",
			  nt_errstr(status)));
	}
	return status;
}

uint32_t dos_mode_msdfs(connection_struct *conn,
		      const struct smb_filename *smb_fname)
{
	uint32_t result = 0;

	DEBUG(8,("dos_mode_msdfs: %s\n", smb_fname_str_dbg(smb_fname)));

	if (!VALID_STAT(smb_fname->st)) {
		return 0;
	}

	/* First do any modifications that depend on the path name. */
	/* hide files with a name starting with a . */
	if (lp_hide_dot_files(SNUM(conn))) {
		const char *p = strrchr_m(smb_fname->base_name, '/');
		if (p) {
			p++;
		} else {
			p = smb_fname->base_name;
		}

		/* Only . and .. are not hidden. */
		if (p[0] == '.' && !((p[1] == '\0') ||
				(p[1] == '.' && p[2] == '\0'))) {
			result |= FILE_ATTRIBUTE_HIDDEN;
		}
	}

	result |= dos_mode_from_sbuf(conn, smb_fname);

	/* Optimization : Only call is_hidden_path if it's not already
	   hidden. */
	if (!(result & FILE_ATTRIBUTE_HIDDEN) &&
	    IS_HIDDEN_PATH(conn, smb_fname->base_name)) {
		result |= FILE_ATTRIBUTE_HIDDEN;
	}

	if (result == 0) {
		result = FILE_ATTRIBUTE_NORMAL;
	}

	result = filter_mode_by_protocol(result);

	/*
	 * Add in that it is a reparse point
	 */
	result |= FILE_ATTRIBUTE_REPARSE_POINT;

	dos_mode_debug_print(__func__, result);

	return(result);
}

static int audit_rename(vfs_handle_struct *handle,
			const struct smb_filename *smb_fname_src,
			const struct smb_filename *smb_fname_dst)
{
	int result;

	result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);

	if (lp_syslog() > 0) {
		syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
		       smb_fname_src->base_name,
		       smb_fname_dst->base_name,
		       (result < 0) ? "failed: " : "",
		       (result < 0) ? strerror(errno) : "");
	}
	DEBUG(1, ("vfs_extd_audit: rename old: %s newname: %s  %s %s\n",
		smb_fname_str_dbg(smb_fname_src),
		smb_fname_str_dbg(smb_fname_dst),
	       (result < 0) ? "failed: " : "",
	       (result < 0) ? strerror(errno) : ""));

	return result;
}

/**
 * Touch access or modify date
 **/
static void recycle_do_touch(vfs_handle_struct *handle,
			     const struct smb_filename *smb_fname,
			     bool touch_mtime)
{
	struct smb_filename *smb_fname_tmp = NULL;
	struct smb_file_time ft;
	NTSTATUS status;
	int ret, err;

	ZERO_STRUCT(ft);

	status = copy_smb_filename(talloc_tos(), smb_fname, &smb_fname_tmp);
	if (!NT_STATUS_IS_OK(status)) {
		return;
	}

	if (SMB_VFS_STAT(handle->conn, smb_fname_tmp) != 0) {
		DEBUG(0,("recycle: stat for %s returned %s\n",
			 smb_fname_str_dbg(smb_fname_tmp), strerror(errno)));
		goto out;
	}
	/* atime */
	ft.atime = timespec_current();
	/* mtime */
	ft.mtime = touch_mtime ? ft.atime : smb_fname_tmp->st.st_ex_mtime;

	become_root();
	ret = SMB_VFS_NEXT_NTIMES(handle, smb_fname_tmp, &ft);
	err = errno;
	unbecome_root();
	if (ret == -1 ) {
		DEBUG(0, ("recycle: touching %s failed, reason = %s\n",
			  smb_fname_str_dbg(smb_fname_tmp), strerror(err)));
	}
 out:
	TALLOC_FREE(smb_fname_tmp);
}

/**
 * The only way that the fsp->fsp_name field should ever be set.
 */
NTSTATUS fsp_set_smb_fname(struct files_struct *fsp,
			   const struct smb_filename *smb_fname_in)
{
	struct smb_filename *smb_fname_new;

	smb_fname_new = cp_smb_filename(fsp, smb_fname_in);
	if (smb_fname_new == NULL) {
		return NT_STATUS_NO_MEMORY;
	}

	TALLOC_FREE(fsp->fsp_name);
	fsp->fsp_name = smb_fname_new;

	return file_name_hash(fsp->conn,
			smb_fname_str_dbg(fsp->fsp_name),
			&fsp->name_hash);
}

static int cephwrap_open(struct vfs_handle_struct *handle,
			struct smb_filename *smb_fname,
			files_struct *fsp, int flags, mode_t mode)
{
	int result = -ENOENT;
	DBG_DEBUG("[CEPH] open(%p, %s, %p, %d, %d)\n", handle,
		  smb_fname_str_dbg(smb_fname), fsp, flags, mode);

	if (smb_fname->stream_name) {
		goto out;
	}

	result = ceph_open(handle->data, smb_fname->base_name, flags, mode);
out:
	DBG_DEBUG("[CEPH] open(...) = %d\n", result);
	WRAP_RETURN(result);
}

static bool find_completed_open(files_struct *fsp,
				int *p_fd,
				int *p_errno)
{
	struct aio_open_private_data *opd;

	opd = find_open_private_data_by_mid(fsp->mid);
	if (!opd) {
		return false;
	}

	if (opd->in_progress) {
		DEBUG(0,("find_completed_open: mid %llu "
			"jobid %d still in progress for "
			"file %s/%s. PANIC !\n",
			(unsigned long long)opd->mid,
			opd->jobid,
			opd->dname,
			opd->fname));
		/* Disaster ! This is an open timeout. Just panic. */
		smb_panic("find_completed_open - in_progress\n");
		/* notreached. */
		return false;
	}

	*p_fd = opd->ret_fd;
	*p_errno = opd->ret_errno;

	DEBUG(5,("find_completed_open: mid %llu returning "
		"fd = %d, errno = %d (%s) "
		"jobid (%d) for file %s\n",
		(unsigned long long)opd->mid,
		opd->ret_fd,
		opd->ret_errno,
		strerror(opd->ret_errno),
		opd->jobid,
		smb_fname_str_dbg(fsp->fsp_name)));

	/* Now we can free the opd. */
	TALLOC_FREE(opd);
	return true;
}

static int audit_unlink(vfs_handle_struct *handle,
			const struct smb_filename *smb_fname)
{
	int result;

	result = SMB_VFS_NEXT_UNLINK(handle, smb_fname);

	if (lp_syslog() > 0) {
		syslog(audit_syslog_priority(handle), "unlink %s %s%s\n",
		       smb_fname->base_name,
		       (result < 0) ? "failed: " : "",
		       (result < 0) ? strerror(errno) : "");
	}
	DEBUG(0, ("vfs_extd_audit: unlink %s %s %s\n",
	       smb_fname_str_dbg(smb_fname),
	       (result < 0) ? "failed: " : "",
	       (result < 0) ? strerror(errno) : ""));

	return result;
}

static int audit_open(vfs_handle_struct *handle,
		      struct smb_filename *smb_fname, files_struct *fsp,
		      int flags, mode_t mode)
{
	int result;

	result = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);

	if (lp_syslog() > 0) {
		syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n",
		       smb_fname->base_name, result,
		       ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
		       (result < 0) ? "failed: " : "",
		       (result < 0) ? strerror(errno) : "");
	}
	DEBUG(2, ("vfs_extd_audit: open %s %s %s\n",
	       smb_fname_str_dbg(smb_fname),
	       (result < 0) ? "failed: " : "",
	       (result < 0) ? strerror(errno) : ""));

	return result;
}

/*
 * Because there is no good way to guarantee that a new xattr will be
 * created on file creation there might be no acl xattr on a file when
 * trying to read the acl. In this case the acl xattr will get
 * constructed at that time from the parent acl.
 * If the parent ACL doesn't have an xattr either the call will
 * recurse to the next parent directory until the share root is
 * reached. If the share root doesn't contain an ACL xattr either a
 * default ACL will be used.
 * Also a default ACL will be set if a non inheriting ACL is encountered.
 *
 * Basic algorithm:
 *   read acl xattr blob
 *   if acl xattr blob doesn't exist
 *     stat current directory to know if it's a file or directory
 *     read acl xattr blob from parent dir
 *     acl xattr blob to smb nfs4 acl
 *     calculate inherited smb nfs4 acl
 *     without inheritance use default smb nfs4 acl
 *     smb nfs4 acl to acl xattr blob
 *     set acl xattr blob
 *     return smb nfs4 acl
 *   else
 *     acl xattr blob to smb nfs4 acl
 *
 * Todo: Really use mem_ctx after fixing interface of nfs4_acls
 */
static struct SMB4ACL_T *nfs4acls_inheritacl(vfs_handle_struct *handle,
	const char *path,
	TALLOC_CTX *mem_ctx)
{
	char *parent_dir = NULL;
	struct SMB4ACL_T *pparentacl = NULL;
	struct SMB4ACL_T *pchildacl = NULL;
	struct SMB4ACE_T *pace;
	SMB_ACE4PROP_T ace;
	bool isdir;
	struct smb_filename *smb_fname = NULL;
	NTSTATUS status;
	int ret;
	TALLOC_CTX *frame = talloc_stackframe();

	DEBUG(10, ("nfs4acls_inheritacl invoked for %s\n", path));
	smb_fname = synthetic_smb_fname(frame, path, NULL, NULL);
	if (smb_fname == NULL) {
		TALLOC_FREE(frame);
		errno = ENOMEM;
		return NULL;
	}

	ret = SMB_VFS_STAT(handle->conn, smb_fname);
	if (ret == -1) {
		DEBUG(0,("nfs4acls_inheritacl: failed to stat "
			 "directory %s. Error was %s\n",
			 smb_fname_str_dbg(smb_fname),
			 strerror(errno)));
		TALLOC_FREE(frame);
		return NULL;
	}
	isdir = S_ISDIR(smb_fname->st.st_ex_mode);

	if (!parent_dirname(talloc_tos(),
			    path,
			    &parent_dir,
			    NULL)) {
		TALLOC_FREE(frame);
		errno = ENOMEM;
		return NULL;
	}

	status = nfs4_get_nfs4_acl(handle, frame, parent_dir, &pparentacl);
	if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)
	    && strncmp(parent_dir, ".", 2) != 0) {
		pparentacl = nfs4acls_inheritacl(handle, parent_dir,
						 frame);
	}
	else if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
		pparentacl = nfs4acls_defaultacl(frame);

	}
	else if (!NT_STATUS_IS_OK(status)) {
		TALLOC_FREE(frame);
		return NULL;
	}

	pchildacl = smb_create_smb4acl(mem_ctx);
	if (pchildacl == NULL) {
		DEBUG(0, ("talloc failed\n"));
		TALLOC_FREE(frame);
		errno = ENOMEM;
		return NULL;
	}

	for (pace = smb_first_ace4(pparentacl); pace != NULL;
	     pace = smb_next_ace4(pace)) {
		struct SMB4ACE_T *pchildace;
		ace = *smb_get_ace4(pace);
		if ((isdir && !(ace.aceFlags & SMB_ACE4_DIRECTORY_INHERIT_ACE)) ||
		    (!isdir && !(ace.aceFlags & SMB_ACE4_FILE_INHERIT_ACE))) {
			DEBUG(10, ("non inheriting ace type: %d, iflags: %x, "
//.........这里部分代码省略.........

static NTSTATUS build_stream_path(TALLOC_CTX *mem_ctx,
				  connection_struct *conn,
				  const char *orig_path,
				  struct smb_filename *smb_fname)
{
	NTSTATUS status;
	unsigned int i, num_streams = 0;
	struct stream_struct *streams = NULL;

	if (SMB_VFS_STAT(conn, smb_fname) == 0) {
		DEBUG(10, ("'%s' exists\n", smb_fname_str_dbg(smb_fname)));
		return NT_STATUS_OK;
	}

	if (errno != ENOENT) {
		DEBUG(10, ("vfs_stat failed: %s\n", strerror(errno)));
		status = map_nt_error_from_unix(errno);
		goto fail;
	}

	/* Fall back to a case-insensitive scan of all streams on the file. */
	status = vfs_streaminfo(conn, NULL, smb_fname->base_name, mem_ctx,
				&num_streams, &streams);

	if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
		SET_STAT_INVALID(smb_fname->st);
		return NT_STATUS_OK;
	}

	if (!NT_STATUS_IS_OK(status)) {
		DEBUG(10, ("vfs_streaminfo failed: %s\n", nt_errstr(status)));
		goto fail;
	}

	for (i=0; i<num_streams; i++) {
		DEBUG(10, ("comparing [%s] and [%s]: ",
			   smb_fname->stream_name, streams[i].name));
		if (fname_equal(smb_fname->stream_name, streams[i].name,
				conn->case_sensitive)) {
			DEBUGADD(10, ("equal\n"));
			break;
		}
		DEBUGADD(10, ("not equal\n"));
	}

	/* Couldn't find the stream. */
	if (i == num_streams) {
		SET_STAT_INVALID(smb_fname->st);
		TALLOC_FREE(streams);
		return NT_STATUS_OK;
	}

	DEBUG(10, ("case insensitive stream. requested: %s, actual: %s\n",
		smb_fname->stream_name, streams[i].name));


	TALLOC_FREE(smb_fname->stream_name);
	smb_fname->stream_name = talloc_strdup(smb_fname, streams[i].name);
	if (smb_fname->stream_name == NULL) {
		status = NT_STATUS_NO_MEMORY;
		goto fail;
	}

	SET_STAT_INVALID(smb_fname->st);

	if (SMB_VFS_STAT(conn, smb_fname) == 0) {
		DEBUG(10, ("'%s' exists\n", smb_fname_str_dbg(smb_fname)));
	}
	status = NT_STATUS_OK;
 fail:
	TALLOC_FREE(streams);
	return status;
}

/**
 * Return a debug string of the path name of an fsp using the talloc_tos().
 */
const char *fsp_str_dbg(const struct files_struct *fsp)
{
	return smb_fname_str_dbg(fsp->fsp_name);
}

//.........这里部分代码省略.........
			}
			if(!IS_VETO_PATH(conn, dname)) {
				TALLOC_FREE(dir_hnd);
				TALLOC_FREE(talloced);
				errno = ENOTEMPTY;
				goto err;
			}
			TALLOC_FREE(talloced);
		}

		/* We only have veto files/directories.
		 * Are we allowed to delete them ? */

		if(!lp_delete_veto_files(SNUM(conn))) {
			TALLOC_FREE(dir_hnd);
			errno = ENOTEMPTY;
			goto err;
		}

		/* Do a recursive delete. */
		RewindDir(dir_hnd,&dirpos);
		while ((dname = ReadDirName(dir_hnd, &dirpos, &st,
					    &talloced)) != NULL) {
			struct smb_filename *smb_dname_full = NULL;
			char *fullname = NULL;
			bool do_break = true;

			if (ISDOT(dname) || ISDOTDOT(dname)) {
				TALLOC_FREE(talloced);
				continue;
			}
			if (!is_visible_file(conn, smb_dname->base_name, dname,
					     &st, false)) {
				TALLOC_FREE(talloced);
				continue;
			}

			fullname = talloc_asprintf(ctx,
					"%s/%s",
					smb_dname->base_name,
					dname);

			if(!fullname) {
				errno = ENOMEM;
				goto err_break;
			}

			smb_dname_full = synthetic_smb_fname(
				talloc_tos(), fullname, NULL, NULL);
			if (smb_dname_full == NULL) {
				errno = ENOMEM;
				goto err_break;
			}

			if(SMB_VFS_LSTAT(conn, smb_dname_full) != 0) {
				goto err_break;
			}
			if(smb_dname_full->st.st_ex_mode & S_IFDIR) {
				if(!recursive_rmdir(ctx, conn,
						    smb_dname_full)) {
					goto err_break;
				}
				if(SMB_VFS_RMDIR(conn,
					smb_dname_full->base_name) != 0) {
					goto err_break;
				}
			} else if(SMB_VFS_UNLINK(conn, smb_dname_full) != 0) {
				goto err_break;
			}

			/* Successful iteration. */
			do_break = false;

		 err_break:
			TALLOC_FREE(fullname);
			TALLOC_FREE(smb_dname_full);
			TALLOC_FREE(talloced);
			if (do_break)
				break;
		}
		TALLOC_FREE(dir_hnd);
		/* Retry the rmdir */
		ret = SMB_VFS_RMDIR(conn, smb_dname->base_name);
	}

  err:

	if (ret != 0) {
		DEBUG(3,("rmdir_internals: couldn't remove directory %s : "
			 "%s\n", smb_fname_str_dbg(smb_dname),
			 strerror(errno)));
		return map_nt_error_from_unix(errno);
	}

	notify_fname(conn, NOTIFY_ACTION_REMOVED,
		     FILE_NOTIFY_CHANGE_DIR_NAME,
		     smb_dname->base_name);

	return NT_STATUS_OK;
}

//.........这里部分代码省略.........
			 fsp_str_dbg(fsp),
			 file_id_string_tos(&fsp->file_id),
			 file_id_string_tos(&id)));
		/*
		 * Don't save the errno here, we ignore this error
		 */
		goto done;
	}

	if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
	    && !is_ntfs_stream_smb_fname(fsp->fsp_name)) {

		status = delete_all_streams(conn, fsp->fsp_name->base_name);

		if (!NT_STATUS_IS_OK(status)) {
			DEBUG(5, ("delete_all_streams failed: %s\n",
				  nt_errstr(status)));
			goto done;
		}
	}

retry_delete:
	/* temporary files with delete on close set will not be deleted on a
	 * cifs share using a netapp backend since they are opened with
	 * read + write access mask.
	 * close the file to allow the delete.
	 */
	if (fsp->can_write && !S_ISDIR(fsp->fsp_name->st.st_ex_mode) &&
	    fsp->fh->ref_count == 1 && retries) {
		status = fd_close(fsp);
		if (!NT_STATUS_IS_OK(status)) {
			DEBUG(3, ("close_remove_share_mode: Error %s closing %s\n",
				nt_errstr(status),
				smb_fname_str_dbg(fsp->fsp_name)));
			goto skip_retry;
		}
		if (SMB_VFS_UNLINK(conn, fsp->fsp_name) != 0) {
			/*
			* This call can potentially fail as another smbd may
			* have had the file open with delete on close set and
			* deleted it when its last reference to this file
			* went away. Hence we log this but not at debug level
			* zero.
			*/

			DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
				 "was set and unlink failed with error %s\n",
				 fsp_str_dbg(fsp), strerror(errno)));

			status = map_nt_error_from_unix(errno);
			retries = 0;
			goto retry_delete;
		}
	} else {
		if (SMB_VFS_UNLINK(conn, fsp->fsp_name) != 0) {
			/*
			 * This call can potentially fail as another smbd may
			 * have had the file open with delete on close set and
			 * deleted it when its last reference to this file
			 * went away. Hence we log this but not at debug level
			 * zero.
			 */

			DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
				 "was set and unlink failed with error %s\n",
				 fsp_str_dbg(fsp), strerror(errno)));

/**
 * Go through all the steps to validate a filename.
 *
 * @param ctx		talloc_ctx to allocate memory with.
 * @param conn		connection struct for vfs calls.
 * @param dfs_path	Whether this path requires dfs resolution.
 * @param name_in	The unconverted name.
 * @param ucf_flags	flags to pass through to unix_convert().
 *			UCF_ALWAYS_ALLOW_WCARD_LCOMP will be OR'd in if
 *			p_cont_wcard != NULL and is true and
 *			UCF_COND_ALLOW_WCARD_LCOMP.
 * @param p_cont_wcard	If not NULL, will be set to true if the dfs path
 *			resolution detects a wildcard.
 * @param pp_smb_fname	The final converted name will be allocated if the
 *			return is NT_STATUS_OK.
 *
 * @return NT_STATUS_OK if all operations completed succesfully, appropriate
 * 	   error otherwise.
 */
NTSTATUS filename_convert(TALLOC_CTX *ctx,
				connection_struct *conn,
				bool dfs_path,
				const char *name_in,
				uint32_t ucf_flags,
				bool *ppath_contains_wcard,
				struct smb_filename **pp_smb_fname)
{
	NTSTATUS status;
	bool allow_wcards = (ucf_flags & (UCF_COND_ALLOW_WCARD_LCOMP|UCF_ALWAYS_ALLOW_WCARD_LCOMP));
	char *fname = NULL;

	*pp_smb_fname = NULL;

	status = resolve_dfspath_wcard(ctx, conn,
				dfs_path,
				name_in,
				allow_wcards,
				&fname,
				ppath_contains_wcard);
	if (!NT_STATUS_IS_OK(status)) {
		DEBUG(10,("filename_convert: resolve_dfspath failed "
			"for name %s with %s\n",
			name_in,
			nt_errstr(status) ));
		return status;
	}

	if (is_fake_file_path(name_in)) {
		SMB_STRUCT_STAT st;
		ZERO_STRUCT(st);
		st.st_ex_nlink = 1;
		status = create_synthetic_smb_fname_split(ctx,
							  name_in,
							  &st,
							  pp_smb_fname);
		return status;
	}

	/*
	 * If the caller conditionally allows wildcard lookups, only add the
	 * always allow if the path actually does contain a wildcard.
	 */
	if (ucf_flags & UCF_COND_ALLOW_WCARD_LCOMP &&
	    ppath_contains_wcard != NULL && *ppath_contains_wcard) {
		ucf_flags |= UCF_ALWAYS_ALLOW_WCARD_LCOMP;
	}

	status = unix_convert(ctx, conn, fname, pp_smb_fname, ucf_flags);
	if (!NT_STATUS_IS_OK(status)) {
		DEBUG(10,("filename_convert: unix_convert failed "
			"for name %s with %s\n",
			fname,
			nt_errstr(status) ));
		return status;
	}

	if ((ucf_flags & UCF_UNIX_NAME_LOOKUP) &&
			VALID_STAT((*pp_smb_fname)->st) &&
			S_ISLNK((*pp_smb_fname)->st.st_ex_mode)) {
		return check_veto_path(conn, (*pp_smb_fname)->base_name);
	}

	status = check_name(conn, (*pp_smb_fname)->base_name);
	if (!NT_STATUS_IS_OK(status)) {
		DEBUG(3,("filename_convert: check_name failed "
			"for name %s with %s\n",
			smb_fname_str_dbg(*pp_smb_fname),
			nt_errstr(status) ));
		TALLOC_FREE(*pp_smb_fname);
		return status;
	}

	return status;
}

NTSTATUS file_set_sparse(connection_struct *conn,
			 files_struct *fsp,
			 bool sparse)
{
	uint32_t old_dosmode;
	uint32_t new_dosmode;
	NTSTATUS status;

	if (!CAN_WRITE(conn)) {
		DEBUG(9,("file_set_sparse: fname[%s] set[%u] "
			"on readonly share[%s]\n",
			smb_fname_str_dbg(fsp->fsp_name),
			sparse,
			lp_servicename(talloc_tos(), SNUM(conn))));
		return NT_STATUS_MEDIA_WRITE_PROTECTED;
	}

	/*
	 * Windows Server 2008 & 2012 permit FSCTL_SET_SPARSE if any of the
	 * following access flags are granted.
	 */
	if ((fsp->access_mask & (FILE_WRITE_DATA
				| FILE_WRITE_ATTRIBUTES
				| SEC_FILE_APPEND_DATA)) == 0) {
		DEBUG(9,("file_set_sparse: fname[%s] set[%u] "
			"access_mask[0x%08X] - access denied\n",
			smb_fname_str_dbg(fsp->fsp_name),
			sparse,
			fsp->access_mask));
		return NT_STATUS_ACCESS_DENIED;
	}

	if (fsp->is_directory) {
		DEBUG(9, ("invalid attempt to %s sparse flag on dir %s\n",
			  (sparse ? "set" : "clear"),
			  smb_fname_str_dbg(fsp->fsp_name)));
		return NT_STATUS_INVALID_PARAMETER;
	}

	if (IS_IPC(conn) || IS_PRINT(conn)) {
		DEBUG(9, ("attempt to %s sparse flag over invalid conn\n",
			  (sparse ? "set" : "clear")));
		return NT_STATUS_INVALID_PARAMETER;
	}

	DEBUG(10,("file_set_sparse: setting sparse bit %u on file %s\n",
		  sparse, smb_fname_str_dbg(fsp->fsp_name)));

	if (!lp_store_dos_attributes(SNUM(conn))) {
		return NT_STATUS_INVALID_DEVICE_REQUEST;
	}

	status = vfs_stat_fsp(fsp);
	if (!NT_STATUS_IS_OK(status)) {
		return status;
	}

	old_dosmode = dos_mode(conn, fsp->fsp_name);

	if (sparse && !(old_dosmode & FILE_ATTRIBUTE_SPARSE)) {
		new_dosmode = old_dosmode | FILE_ATTRIBUTE_SPARSE;
	} else if (!sparse && (old_dosmode & FILE_ATTRIBUTE_SPARSE)) {
		new_dosmode = old_dosmode & ~FILE_ATTRIBUTE_SPARSE;
	} else {
		return NT_STATUS_OK;
	}

	/* Store the DOS attributes in an EA. */
	if (!set_ea_dos_attribute(conn, fsp->fsp_name,
				  new_dosmode)) {
		if (errno == 0) {
			errno = EIO;
		}
		return map_nt_error_from_unix(errno);
	}

	notify_fname(conn, NOTIFY_ACTION_MODIFIED,
		     FILE_NOTIFY_CHANGE_ATTRIBUTES,
		     fsp->fsp_name->base_name);

	fsp->is_sparse = sparse;

	return NT_STATUS_OK;
}

uint32 dos_mode(connection_struct *conn, struct smb_filename *smb_fname)
{
	uint32 result = 0;
	bool offline;

	DEBUG(8,("dos_mode: %s\n", smb_fname_str_dbg(smb_fname)));

	if (!VALID_STAT(smb_fname->st)) {
		return 0;
	}

	/* First do any modifications that depend on the path name. */
	/* hide files with a name starting with a . */
	if (lp_hide_dot_files(SNUM(conn))) {
		const char *p = strrchr_m(smb_fname->base_name,'/');
		if (p) {
			p++;
		} else {
			p = smb_fname->base_name;
		}

		/* Only . and .. are not hidden. */
		if (p[0] == '.' && !((p[1] == '\0') ||
				(p[1] == '.' && p[2] == '\0'))) {
			result |= FILE_ATTRIBUTE_HIDDEN;
		}
	}

	/* Get the DOS attributes from an EA by preference. */
	if (!get_ea_dos_attribute(conn, smb_fname, &result)) {
		result |= dos_mode_from_sbuf(conn, smb_fname);
	}

	offline = SMB_VFS_IS_OFFLINE(conn, smb_fname, &smb_fname->st);
	if (S_ISREG(smb_fname->st.st_ex_mode) && offline) {
		result |= FILE_ATTRIBUTE_OFFLINE;
	}

	if (conn->fs_capabilities & FILE_FILE_COMPRESSION) {
		bool compressed = false;
		NTSTATUS status = dos_mode_check_compressed(conn, smb_fname,
							    &compressed);
		if (NT_STATUS_IS_OK(status) && compressed) {
			result |= FILE_ATTRIBUTE_COMPRESSED;
		}
	}

	/* Optimization : Only call is_hidden_path if it's not already
	   hidden. */
	if (!(result & FILE_ATTRIBUTE_HIDDEN) &&
	    IS_HIDDEN_PATH(conn, smb_fname->base_name)) {
		result |= FILE_ATTRIBUTE_HIDDEN;
	}

	if (result == 0) {
		result = FILE_ATTRIBUTE_NORMAL;
	}

	result = filter_mode_by_protocol(result);

	dos_mode_debug_print(result);

	return result;
}