dfsinternal.h

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#ifndef __LIBDRAGON_DFSINTERNAL_H
#define __LIBDRAGON_DFSINTERNAL_H
 
#define ROOT_FLAGS      0xFFFFFFFF
#define ROOT_NEXT_ENTRY 0xDEADBEEF
#define ROOT_PATH       "DragonFS 2.0"
 
#define SECTOR_SIZE     256
#define SECTOR_PAYLOAD  252
 
#define DFS_LOOKUP_PRIME 31
 
struct directory_entry
{
    uint32_t next_entry;
    uint32_t flags;
    char path[MAX_FILENAME_LEN+1];
    uint32_t file_pointer;
} __attribute__((__packed__));
 
_Static_assert(sizeof(struct directory_entry) == SECTOR_SIZE, "invalid directory_entry size");
 
typedef struct directory_entry directory_entry_t;
 
typedef struct dfs_open_file_s
{
    uint32_t size;
    uint32_t loc;
    uint32_t cart_start_loc;
} dfs_open_file_t;
 
typedef struct dfs_lookup_file_s {
    uint32_t path_hash;
    uint32_t path_ofs;
    uint32_t data_ofs;
    uint32_t data_len;
} dfs_lookup_file_t;
 
typedef struct dfs_lookup_s {
    uint32_t num_files;
    uint32_t path_ofs;
    dfs_lookup_file_t files[];
} dfs_lookup_t;
 
 
#endif