/*
 * Copyright 2004-2008, Axel Dörfler, axeld@pinc-software.de.
 * Distributed under the terms of the MIT License.
 */
#ifndef _KERNEL_FILE_CACHE_H
#define _KERNEL_FILE_CACHE_H


#include <vfs.h>
#include <vm/vm_types.h>
#include <module.h>


// temporary/optional cache syscall API
#define CACHE_SYSCALLS "cache"

#define CACHE_CLEAR                     1       // takes no parameters
#define CACHE_SET_MODULE        2       // gets the module name as parameter

#define CACHE_MODULES_NAME      "file_cache"

#define FILE_CACHE_SEQUENTIAL_ACCESS    0x01
#define FILE_CACHE_LOADED_COMPLETELY    0x02
#define FILE_CACHE_NO_IO                                0x04

struct cache_module_info {
        module_info     info;

        void (*node_opened)(struct vnode *vnode, dev_t mountID,
                                ino_t parentID, ino_t vnodeID, const char *name, off_t size);
        void (*node_closed)(struct vnode *vnode, dev_t mountID,
                                ino_t vnodeID, int32 accessType);
        void (*node_launched)(size_t argCount, char * const *args);
};

#ifdef __cplusplus
extern "C" {
#endif

extern void cache_node_opened(struct vnode *vnode, VMCache *cache,
                                dev_t mountID, ino_t parentID, ino_t vnodeID, const char *name);
extern void cache_node_closed(struct vnode *vnode, VMCache *cache,
                                dev_t mountID, ino_t vnodeID);
extern void cache_node_launched(size_t argCount, char * const *args);
extern void cache_prefetch_vnode(struct vnode *vnode, off_t offset, size_t size);
extern void cache_prefetch(dev_t mountID, ino_t vnodeID, off_t offset, size_t size);

extern status_t file_map_init(void);
extern status_t file_cache_init_post_boot_device(void);
extern status_t file_cache_init(void);

#ifdef __cplusplus
}
#endif

#endif  /* _KRENEL_FILE_CACHE_H */