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/*
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* Copyright ( C ) 2001 - 2004 Sistina Software , Inc . All rights reserved .
* Copyright ( C ) 2004 Red Hat , Inc . All rights reserved .
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*
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* This file is part of LVM2 .
*
* This copyrighted material is made available to anyone wishing to use ,
* modify , copy , or redistribute it subject to the terms and conditions
* of the GNU General Public License v .2 .
*
* You should have received a copy of the GNU General Public License
* along with this program ; if not , write to the Free Software Foundation ,
* Inc . , 59 Temple Place , Suite 330 , Boston , MA 02111 - 1307 USA
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*/
# ifndef _LVM_DEV_CACHE_H
# define _LVM_DEV_CACHE_H
# include "device.h"
/*
* predicate for devices .
*/
struct dev_filter {
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int ( * passes_filter ) ( struct dev_filter * f , struct device * dev ) ;
void ( * destroy ) ( struct dev_filter * f ) ;
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void * private ;
} ;
/*
* The global device cache .
*/
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struct cmd_context ;
int dev_cache_init ( struct cmd_context * cmd ) ;
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void dev_cache_exit ( void ) ;
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/* Trigger(1) or avoid(0) a scan */
void dev_cache_scan ( int do_scan ) ;
int dev_cache_has_scanned ( void ) ;
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int dev_cache_add_dir ( const char * path ) ;
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int dev_cache_add_loopfile ( const char * path ) ;
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struct device * dev_cache_get ( const char * name , struct dev_filter * f ) ;
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void dev_set_preferred_name ( struct str_list * sl , struct device * dev ) ;
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/*
* Object for iterating through the cache .
*/
struct dev_iter ;
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struct dev_iter * dev_iter_create ( struct dev_filter * f , int dev_scan ) ;
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void dev_iter_destroy ( struct dev_iter * iter ) ;
struct device * dev_iter_get ( struct dev_iter * iter ) ;
# endif