129 lines
3.8 KiB
C
129 lines
3.8 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2005 by Miika Pekkarinen
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef _DIRCACHE_H
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#define _DIRCACHE_H
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#include "dir_uncached.h"
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#ifdef HAVE_DIRCACHE
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#define DIRCACHE_RESERVE (1024*64)
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#define DIRCACHE_LIMIT (1024*1024*6)
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#define DIRCACHE_FILE ROCKBOX_DIR"/dircache.dat"
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#define DIRCACHE_APPFLAG_TAGCACHE 0x0001
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/* Internal structures. */
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struct travel_data {
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struct dircache_entry *first;
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struct dircache_entry *ce;
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struct dircache_entry *down_entry;
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#if (CONFIG_PLATFORM & PLATFORM_HOSTED)
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DIR_UNCACHED *dir, *newdir;
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struct dirent_uncached *entry;
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#else
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struct fat_dir *dir;
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struct fat_dir newdir;
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struct fat_direntry entry;
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#endif
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int pathpos;
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};
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#define DIRCACHE_MAGIC 0x00d0c0a0
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struct dircache_maindata {
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long magic;
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long size;
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long entry_count;
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long appflags;
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struct dircache_entry *root_entry;
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};
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#define MAX_PENDING_BINDINGS 2
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struct fdbind_queue {
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char path[MAX_PATH];
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int fd;
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};
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/* Exported structures. */
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struct dircache_entry {
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struct dircache_entry *next;
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struct dircache_entry *up;
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struct dircache_entry *down;
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int attribute;
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long size;
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long startcluster;
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unsigned short wrtdate;
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unsigned short wrttime;
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unsigned long name_len;
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char *d_name;
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};
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struct dirent_cached {
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char *d_name;
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int attribute;
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long size;
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long startcluster;
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unsigned short wrtdate; /* Last write date */
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unsigned short wrttime; /* Last write time */
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};
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typedef struct {
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bool busy;
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struct dirent_cached theent; /* .attribute is set to -1 on init(opendir) */
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struct dircache_entry *internal_entry; /* the current entry in the directory */
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DIR_UNCACHED *regulardir;
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} DIR_CACHED;
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void dircache_init(void) INIT_ATTR;
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int dircache_load(void);
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int dircache_save(void);
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int dircache_build(int last_size);
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void* dircache_steal_buffer(long *size);
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bool dircache_is_enabled(void);
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bool dircache_is_initializing(void);
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void dircache_set_appflag(long mask);
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bool dircache_get_appflag(long mask);
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int dircache_get_entry_count(void);
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int dircache_get_cache_size(void);
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int dircache_get_reserve_used(void);
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int dircache_get_build_ticks(void);
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void dircache_disable(void);
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const struct dircache_entry *dircache_get_entry_ptr(const char *filename);
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void dircache_copy_path(const struct dircache_entry *entry, char *buf, int size);
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void dircache_bind(int fd, const char *path);
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void dircache_update_filesize(int fd, long newsize, long startcluster);
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void dircache_update_filetime(int fd);
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void dircache_mkdir(const char *path);
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void dircache_rmdir(const char *path);
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void dircache_remove(const char *name);
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void dircache_rename(const char *oldpath, const char *newpath);
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void dircache_add_file(const char *path, long startcluster);
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DIR_CACHED* opendir_cached(const char* name);
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struct dirent_cached* readdir_cached(DIR_CACHED* dir);
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int closedir_cached(DIR_CACHED *dir);
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int mkdir_cached(const char *name);
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int rmdir_cached(const char* name);
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#endif /* !HAVE_DIRCACHE */
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#endif
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