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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 by Miika Pekkarinen
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef _DIRCACHE_H
#define _DIRCACHE_H
#include "config.h"
#include "dir_uncached.h"
#ifdef HAVE_DIRCACHE
#define DIRCACHE_RESERVE (1024*64)
#define DIRCACHE_LIMIT (1024*1024*6)
#define DIRCACHE_APPFLAG_TAGCACHE 0x0001
/* Internal structures. */
struct travel_data {
struct dircache_entry *first;
struct dircache_entry *ce;
struct dircache_entry *down_entry;
#if (CONFIG_PLATFORM & PLATFORM_HOSTED)
DIR_UNCACHED *dir, *newdir;
struct dirent_uncached *entry;
#else
struct fat_dir *dir;
struct fat_dir newdir;
struct fat_direntry entry;
#endif
int pathpos;
};
struct dirent_cached {
struct dirinfo info;
char *d_name;
long startcluster;
};
typedef struct {
bool busy;
struct dirent_cached theent; /* .attribute is set to -1 on init(opendir) */
int internal_entry; /* the current entry in the directory */
DIR_UNCACHED *regulardir;
} DIR_CACHED;
void dircache_init(void) INIT_ATTR;
int dircache_load(void);
int dircache_save(void);
int dircache_build(int last_size);
void* dircache_steal_buffer(long *size);
bool dircache_is_enabled(void);
bool dircache_is_initializing(void);
void dircache_set_appflag(long mask);
bool dircache_get_appflag(long mask);
int dircache_get_entry_count(void);
int dircache_get_cache_size(void);
int dircache_get_reserve_used(void);
int dircache_get_build_ticks(void);
void dircache_disable(void);
int dircache_get_entry_id(const char *filename);
size_t dircache_copy_path(int index, char *buf, size_t size);
/* the next two are internal for file.c */
long _dircache_get_entry_startcluster(int id);
struct dirinfo* _dircache_get_entry_dirinfo(int id);
void dircache_bind(int fd, const char *path);
void dircache_update_filesize(int fd, long newsize, long startcluster);
void dircache_update_filetime(int fd);
void dircache_mkdir(const char *path);
void dircache_rmdir(const char *path);
void dircache_remove(const char *name);
void dircache_rename(const char *oldpath, const char *newpath);
void dircache_add_file(const char *path, long startcluster);
DIR_CACHED* opendir_cached(const char* name);
struct dirent_cached* readdir_cached(DIR_CACHED* dir);
int closedir_cached(DIR_CACHED *dir);
int mkdir_cached(const char *name);
int rmdir_cached(const char* name);
#endif /* !HAVE_DIRCACHE */
#endif
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