1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * 24 * cfsd_maptbl.h 25 * 26 * Include file for the maptbl class. 27 */ 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 /* Copyright (c) 1994 by Sun Microsystems, Inc. */ 31 32 #ifndef CFSD_MAPTBL 33 #define CFSD_MAPTBL 34 35 typedef struct cfsd_maptbl_object { 36 char i_name[MAXPATHLEN * 3]; /* name of file */ 37 int i_fid; /* fid of file */ 38 off_t i_size; /* file size */ 39 int i_entries; /* number of entries */ 40 int i_hash2mod; /* second hash module value */ 41 int i_stat_filled; /* number of filled entries */ 42 int i_stat_requests; /* number of lookups done */ 43 int i_stat_probes; /* number of probes */ 44 int i_stat_mapmove; /* number of times map moved */ 45 long i_stat_mapdist; /* how far we move the map */ 46 caddr_t i_pa; /* address of mmap section */ 47 size_t i_palen; /* length of mmap section */ 48 off_t i_paoff; /* offset of mmap section */ 49 off_t i_paend; /* end offset of mmap section */ 50 long i_pagesize; /* size of a page */ 51 u_long i_pagemask; /* page alignment mask */ 52 long i_maplen; /* amount to map */ 53 } cfsd_maptbl_object_t; 54 55 cfsd_maptbl_object_t *cfsd_maptbl_create(void); 56 void cfsd_maptbl_destroy(cfsd_maptbl_object_t *maptbl_object_p); 57 58 int maptbl_domap(cfsd_maptbl_object_t *maptbl_object_p, off_t off); 59 caddr_t maptbl_getaddr(cfsd_maptbl_object_t *maptbl_object_p, int index); 60 int maptbll_cidhashaddr(cfsd_maptbl_object_t *maptbl_object_p, 61 cfs_cid_t cid, caddr_t *addrp); 62 int maptbl_hash1(cfsd_maptbl_object_t *maptbl_object_p, cfs_cid_t cid); 63 int maptbl_hash2(cfsd_maptbl_object_t *maptbl_object_p, cfs_cid_t cid, 64 int index); 65 66 /* performs setup for the specified file */ 67 int maptbl_setup(cfsd_maptbl_object_t *maptbl_object_p, const char *filename); 68 void maptbl_teardown(cfsd_maptbl_object_t *maptbl_object_p); 69 70 /* gets/sets cid mapping */ 71 int maptbl_get(cfsd_maptbl_object_t *maptbl_object_p, cfs_cid_t cid, 72 struct cfs_dlog_mapping_space *valuep); 73 int maptbl_set(cfsd_maptbl_object_t *maptbl_object_p, 74 struct cfs_dlog_mapping_space *valuep, int insert); 75 76 /* prints out various stats about the hashing */ 77 void maptbl_dumpstats(cfsd_maptbl_object_t *maptbl_object_p); 78 79 #endif /* CFSD_MAPTBL */ 80