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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
*
* cfsd_maptbl.h
*
* Include file for the maptbl class.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/* Copyright (c) 1994 by Sun Microsystems, Inc. */
#ifndef CFSD_MAPTBL
#define CFSD_MAPTBL
typedef struct cfsd_maptbl_object {
char i_name[MAXPATHLEN * 3]; /* name of file */
int i_fid; /* fid of file */
off_t i_size; /* file size */
int i_entries; /* number of entries */
int i_hash2mod; /* second hash module value */
int i_stat_filled; /* number of filled entries */
int i_stat_requests; /* number of lookups done */
int i_stat_probes; /* number of probes */
int i_stat_mapmove; /* number of times map moved */
long i_stat_mapdist; /* how far we move the map */
caddr_t i_pa; /* address of mmap section */
size_t i_palen; /* length of mmap section */
off_t i_paoff; /* offset of mmap section */
off_t i_paend; /* end offset of mmap section */
long i_pagesize; /* size of a page */
u_long i_pagemask; /* page alignment mask */
long i_maplen; /* amount to map */
} cfsd_maptbl_object_t;
cfsd_maptbl_object_t *cfsd_maptbl_create(void);
void cfsd_maptbl_destroy(cfsd_maptbl_object_t *maptbl_object_p);
int maptbl_domap(cfsd_maptbl_object_t *maptbl_object_p, off_t off);
caddr_t maptbl_getaddr(cfsd_maptbl_object_t *maptbl_object_p, int index);
int maptbll_cidhashaddr(cfsd_maptbl_object_t *maptbl_object_p,
cfs_cid_t cid, caddr_t *addrp);
int maptbl_hash1(cfsd_maptbl_object_t *maptbl_object_p, cfs_cid_t cid);
int maptbl_hash2(cfsd_maptbl_object_t *maptbl_object_p, cfs_cid_t cid,
int index);
/* performs setup for the specified file */
int maptbl_setup(cfsd_maptbl_object_t *maptbl_object_p, const char *filename);
void maptbl_teardown(cfsd_maptbl_object_t *maptbl_object_p);
/* gets/sets cid mapping */
int maptbl_get(cfsd_maptbl_object_t *maptbl_object_p, cfs_cid_t cid,
struct cfs_dlog_mapping_space *valuep);
int maptbl_set(cfsd_maptbl_object_t *maptbl_object_p,
struct cfs_dlog_mapping_space *valuep, int insert);
/* prints out various stats about the hashing */
void maptbl_dumpstats(cfsd_maptbl_object_t *maptbl_object_p);
#endif /* CFSD_MAPTBL */
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