xref: /titanic_44/usr/src/cmd/fs.d/cachefs/cfsd/cfsd_cache.h (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  *
24*7c478bd9Sstevel@tonic-gate  *			cache.h
25*7c478bd9Sstevel@tonic-gate  *
26*7c478bd9Sstevel@tonic-gate  * Include file for the cache class.
27*7c478bd9Sstevel@tonic-gate  */
28*7c478bd9Sstevel@tonic-gate 
29*7c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
30*7c478bd9Sstevel@tonic-gate /* Copyright (c) 1994 by Sun Microsystems, Inc. */
31*7c478bd9Sstevel@tonic-gate 
32*7c478bd9Sstevel@tonic-gate #ifndef CFSD_CACHE
33*7c478bd9Sstevel@tonic-gate #define	CFSD_CACHE
34*7c478bd9Sstevel@tonic-gate 
35*7c478bd9Sstevel@tonic-gate typedef struct cfsd_cache_object {
36*7c478bd9Sstevel@tonic-gate 	char			 i_cachedir[MAXPATHLEN]; /* cache directory */
37*7c478bd9Sstevel@tonic-gate 	int			 i_cacheid;		 /* cache id */
38*7c478bd9Sstevel@tonic-gate 	cfsd_fscache_object_t	*i_fscachelist;		 /* list of fscaches */
39*7c478bd9Sstevel@tonic-gate 	int			 i_fscachecount;	 /* # of objs in list */
40*7c478bd9Sstevel@tonic-gate 	mutex_t			 i_lock;		 /* synchro lock */
41*7c478bd9Sstevel@tonic-gate 	int			 i_refcnt;		 /* refs to object */
42*7c478bd9Sstevel@tonic-gate 	int			 i_nextfscacheid;	 /* for fscache ids */
43*7c478bd9Sstevel@tonic-gate 	int			 i_modify;		 /* changes when mod */
44*7c478bd9Sstevel@tonic-gate 	struct cfsd_cache_object	*i_next;	 /* next cache object */
45*7c478bd9Sstevel@tonic-gate } cfsd_cache_object_t;
46*7c478bd9Sstevel@tonic-gate 
47*7c478bd9Sstevel@tonic-gate cfsd_cache_object_t *cfsd_cache_create(void);
48*7c478bd9Sstevel@tonic-gate void cfsd_cache_destroy(cfsd_cache_object_t *cache_object_p);
49*7c478bd9Sstevel@tonic-gate 
50*7c478bd9Sstevel@tonic-gate int cache_setup(cfsd_cache_object_t *cache_object_p, const char *cachedirp,
51*7c478bd9Sstevel@tonic-gate     int cacheid);
52*7c478bd9Sstevel@tonic-gate void cache_lock(cfsd_cache_object_t *cache_object_p);
53*7c478bd9Sstevel@tonic-gate void cache_unlock(cfsd_cache_object_t *cache_object_p);
54*7c478bd9Sstevel@tonic-gate 
55*7c478bd9Sstevel@tonic-gate cfsd_fscache_object_t *cache_fscachelist_at(cfsd_cache_object_t *cache_object_p,
56*7c478bd9Sstevel@tonic-gate     size_t index);
57*7c478bd9Sstevel@tonic-gate void cache_fscachelist_add(cfsd_cache_object_t *cache_object_p,
58*7c478bd9Sstevel@tonic-gate     cfsd_fscache_object_t *fscache_object_p);
59*7c478bd9Sstevel@tonic-gate cfsd_fscache_object_t *cache_fscachelist_find(
60*7c478bd9Sstevel@tonic-gate     cfsd_cache_object_t *cache_object_p, const char *namep);
61*7c478bd9Sstevel@tonic-gate 
62*7c478bd9Sstevel@tonic-gate #endif /* CFSD_CACHE */
63