lsfs_16-bit/main.h

#ifndef MAIN_H
#define MAIN_H

#define SPACE_MBR_RECORD 2048 /* Sectors*/
#define SPACE_VBR_RECORD 2048 /* Sectors*/
#define SIZE_FSCI_RECORD    1 /* Sectors*/
#define DEFAULT_ENTRY_SIZE  1 /* Sectors*/
#define SECTOR_SIZE 512 /* BYTES*/
#define NUMBER_OF_MBR_PARTITIONS 4
#define DEFAULT_FILE_SIZE 4 /* This is in sectors*/
#define DEFAULT_DATA_POINTER_SIZE 4 /* This is in sectors*/
#define DEFAULT_TABLE_SIZE 16 
#define NUM_DATA_POINTERS 27 

#include "std_singos/stdio.h"
#include "std_singos/stdlib.h"

#include "std_singos/string.h"
#include "driver/disk.h"
#include "implementation/lsfs.h" 

void dump_ax(input);
void print_stack(argument);
void print_newline();

typedef struct Directory_Table Directory_Table;
typedef struct Struct_Table_Entry Table_Entry;
typedef struct struct_partition_control partition_control;
typedef struct File_System_Control_Information FSCI;
typedef struct meta_information_format mif;
typedef struct tag_record tag_record;
typedef struct Parameter_Struct Parameter_Struct;

typedef enum Table_Entry_Kind
{
    /* These are specific values since, is has to corrospond to the implementation in assembly*/
    ENTRY_EMPTY = 0,
    ENTRY_FILE = 1,
    ENTRY_DIRECTORY = 2,
} Table_Entry_Kind;

typedef enum Service_Action
{
    SERIVCE_LOAD_DISK  = 1,
    SERVICE_FIND_ENTRY = 2,
    SERIVCE_READ_DATA  = 3,
    SERIVCE_WRITE_DATA = 4,

} Service_Action;

struct Struct_Table_Entry 
{
    char    filename[256]; 
    long    file_id[2];
    long    file_size[2];
    void*   ext_file_data_low;
    void*   ext_file_data_high;
    long    number_sector_s; /* <- Just try to remove the last undercore and compile .          */
    short   entry_kind;
    short   extra_control_bits1;
    short   extra_control_bits2;
    short   extra_control_bits3;
    long    table_entry_sector_index[2];
    long    data_pointer[NUM_DATA_POINTERS * 2]; /* if it is a directory, the first pointer will be to the next table. */
}; 

struct File_System_Control_Information 
{
    char filesystem_information[256];
    long master_table_index[2];
    long this_partition_offset_on_disk[2];
    long next_free_sector[2];
    long next_uniqe_id[2]; /* both files and directories gets this. */
    long next_sector_reuse_pointer[2];
    long last_sector_index_on_partition[2];
    long maximum_sectors_on_disk[2];
    long sector_size_on_disk[2];
    long not_used[48];

};

typedef struct Directory_Table 
{
    Table_Entry entries[DEFAULT_TABLE_SIZE];

}; 

struct Parameter_Struct 
{
    char* path;
    char* new_path;
    int buffer_segment;
    int buffer_address;
    int buffer_size;
    int data_length;
    int byte_offset_into_file;
    Table_Entry_Kind entry_kind;
};

#endif