/*
 * Copyright 2008, François Revol <revol@free.fr>.
 * All rights reserved. Distributed under the terms of the MIT License.
 */

#ifndef _BOOT_FILE_MAP_DISK_H
#define _BOOT_FILE_MAP_DISK_H

#include <boot/vfs.h>
#include <boot/partitions.h>

#define FMAP_FOLDER_NAME "BEOS"
#define FMAP_IMAGE_NAME "IMAGE.BE"
//#define FMAP_FOLDER_NAME "HAIKU"
//#define FMAP_IMAGE_NAME "IMAGE.BFS"

#define FMAP_MAX_RUNS 128

struct file_map_run {
        off_t offset;
        off_t block;
        off_t len;
};

struct file_map_boot_item {
        int32 block_size;
        int32 num_runs;
        struct file_map_run runs[FMAP_MAX_RUNS];
};

#ifdef _BOOT_MODE

class FileMap {
public:
        FileMap();
        ~FileMap();
        void AddRun(off_t offset, off_t block, off_t len);

private:
        struct file_map_run fRuns[FMAP_MAX_RUNS];
};

class FileMapDisk : public Node {
        public:
                FileMapDisk();
                virtual ~FileMapDisk();

                status_t Init(Node *node/*Partition *partition, FileMap *map, off_t imageSize*/);

                virtual status_t Open(void **_cookie, int mode);
                virtual status_t Close(void *cookie);


                virtual ssize_t ReadAt(void *cookie, off_t pos, void *buffer,
                        size_t bufferSize);
                virtual ssize_t WriteAt(void *cookie, off_t pos, const void *buffer,
                        size_t bufferSize);

                virtual status_t GetName(char *nameBuffer, size_t bufferSize) const;
                virtual status_t GetFileMap(struct file_map_run *runs, int32 *count);
                virtual off_t Size() const;

                static FileMapDisk *FindAnyFileMapDisk(Directory *volume);

                status_t RegisterFileMapBootItem();

        private:
                Node            *fNode;
                /*
                Partition       *fPartition;
                FileMap         *fMap;
                off_t           fImageSize;
                */
        
};

#endif // _BOOT_MODE

#endif  // _BOOT_FILE_MAP_DISK_H