1*86d7f5d3SJohn Marino /* $NetBSD: dev-cache.h,v 1.1.1.1 2008/12/22 00:18:47 haad Exp $ */ 2*86d7f5d3SJohn Marino 3*86d7f5d3SJohn Marino /* 4*86d7f5d3SJohn Marino * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. 5*86d7f5d3SJohn Marino * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. 6*86d7f5d3SJohn Marino * 7*86d7f5d3SJohn Marino * This file is part of LVM2. 8*86d7f5d3SJohn Marino * 9*86d7f5d3SJohn Marino * This copyrighted material is made available to anyone wishing to use, 10*86d7f5d3SJohn Marino * modify, copy, or redistribute it subject to the terms and conditions 11*86d7f5d3SJohn Marino * of the GNU Lesser General Public License v.2.1. 12*86d7f5d3SJohn Marino * 13*86d7f5d3SJohn Marino * You should have received a copy of the GNU Lesser General Public License 14*86d7f5d3SJohn Marino * along with this program; if not, write to the Free Software Foundation, 15*86d7f5d3SJohn Marino * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 16*86d7f5d3SJohn Marino */ 17*86d7f5d3SJohn Marino 18*86d7f5d3SJohn Marino #ifndef _LVM_DEV_CACHE_H 19*86d7f5d3SJohn Marino #define _LVM_DEV_CACHE_H 20*86d7f5d3SJohn Marino 21*86d7f5d3SJohn Marino #include "device.h" 22*86d7f5d3SJohn Marino 23*86d7f5d3SJohn Marino /* 24*86d7f5d3SJohn Marino * predicate for devices. 25*86d7f5d3SJohn Marino */ 26*86d7f5d3SJohn Marino struct dev_filter { 27*86d7f5d3SJohn Marino int (*passes_filter) (struct dev_filter * f, struct device * dev); 28*86d7f5d3SJohn Marino void (*destroy) (struct dev_filter * f); 29*86d7f5d3SJohn Marino void *private; 30*86d7f5d3SJohn Marino }; 31*86d7f5d3SJohn Marino 32*86d7f5d3SJohn Marino /* 33*86d7f5d3SJohn Marino * The global device cache. 34*86d7f5d3SJohn Marino */ 35*86d7f5d3SJohn Marino struct cmd_context; 36*86d7f5d3SJohn Marino int dev_cache_init(struct cmd_context *cmd); 37*86d7f5d3SJohn Marino void dev_cache_exit(void); 38*86d7f5d3SJohn Marino 39*86d7f5d3SJohn Marino /* Trigger(1) or avoid(0) a scan */ 40*86d7f5d3SJohn Marino void dev_cache_scan(int do_scan); 41*86d7f5d3SJohn Marino int dev_cache_has_scanned(void); 42*86d7f5d3SJohn Marino 43*86d7f5d3SJohn Marino int dev_cache_add_dir(const char *path); 44*86d7f5d3SJohn Marino int dev_cache_add_loopfile(const char *path); 45*86d7f5d3SJohn Marino struct device *dev_cache_get(const char *name, struct dev_filter *f); 46*86d7f5d3SJohn Marino 47*86d7f5d3SJohn Marino void dev_set_preferred_name(struct str_list *sl, struct device *dev); 48*86d7f5d3SJohn Marino 49*86d7f5d3SJohn Marino /* 50*86d7f5d3SJohn Marino * Object for iterating through the cache. 51*86d7f5d3SJohn Marino */ 52*86d7f5d3SJohn Marino struct dev_iter; 53*86d7f5d3SJohn Marino struct dev_iter *dev_iter_create(struct dev_filter *f, int dev_scan); 54*86d7f5d3SJohn Marino void dev_iter_destroy(struct dev_iter *iter); 55*86d7f5d3SJohn Marino struct device *dev_iter_get(struct dev_iter *iter); 56*86d7f5d3SJohn Marino 57*86d7f5d3SJohn Marino #endif 58