/*
   Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
   This file is part of GlusterFS.

   This file is licensed to you under your choice of the GNU Lesser
   General Public License, version 3 or any later version (LGPLv3 or
   later), or the GNU General Public License, version 2 (GPLv2), in all
   cases as published by the Free Software Foundation.
*/
#ifndef __MAP_H__
#define __MAP_H__

#include "xlator.h"
#include "map-mem-types.h"

struct map_pattern {
	struct map_pattern *next;
	xlator_t           *xl;
	char               *directory;
	int                 dir_len;
};

struct map_xlator_array {
	xlator_t *xl;
	int       mapped; /* yes/no */
};

typedef struct {
	struct map_pattern      *map;
	xlator_t                *default_xl;
	struct map_xlator_array *xlarray;
	int                      child_count;
} map_private_t;

typedef struct {
	int32_t        op_ret;
	int32_t        op_errno;
	int            call_count;
	struct statvfs statvfs;
	struct iatt    stbuf;
	inode_t       *inode;
	dict_t        *dict;
	fd_t          *fd;

	size_t        size;
} map_local_t;

xlator_t *map_subvol_next (xlator_t *this, xlator_t *prev);
int map_subvol_cnt (xlator_t *this, xlator_t *subvol);

int map_itransform (xlator_t *this, xlator_t *subvol, 
		    uint64_t x, uint64_t *y_p);
int map_deitransform (xlator_t *this, uint64_t y, 
		      xlator_t **subvol_p, uint64_t *x_p);


xlator_t *get_mapping_subvol_from_path (xlator_t *this, const char *path);
xlator_t *get_mapping_subvol_from_ctx (xlator_t *this, inode_t *inode);

int check_multiple_volume_entry (xlator_t *this, xlator_t *subvol);
int verify_dir_and_assign_subvol (xlator_t *this, 
				  const char *directory, const char *subvol);
int assign_default_subvol (xlator_t *this, const char *default_xl);
void verify_if_all_subvolumes_got_used (xlator_t *this);


#endif /* __MAP_H__ */