fuse/include/fuse.h

#ifndef FUSE_H
#define FUSE_H

#include <sys/types.h>

#define DEFAULTINODEMAX 128
#define DEFAULTBLOCKSIZE 512 // Size in bytes
#define DEFAULTBLOCKMAX 16384

typedef struct fuseArgStruct
{
    int create;
    int list;
    int add;
    int remove;
    int extract;
    char* toAdd;
    char* toRemove;
    char* toExtract;
    char* fsname;
    int fd;
    int newfs;
    int filefsname;
} fuseArgStruct;

typedef struct SuperBlock
{
    blksize_t blockSize;
    blkcnt_t blockCount;
    unsigned long inodeCount;
} SuperBlock;

typedef struct FreeBlockList
{
    int freeList[DEFAULTINODEMAX/32];
} FreeBlockList;

// 128 Blocks
typedef struct DataBlock
{
    char byte[DEFAULTBLOCKSIZE];
} DataBlock;

// typedef struct InodeInfo
// {
//     // char filePath[256];
//     // off_t fileSize;
//     ino_t inode;
//     unsigned int isDirectory : 1;
//     unsigned int isPrinted : 1;
//     unsigned int isValid : 1;
// } InodeInfo;

// Inode * 128 + number
// Directblock == Files/Directories inside an inode?
typedef struct DirectBlock
{
    unsigned int isValid : 1;
    unsigned int isDirectory : 1;
    char name[256];
    ino_t inode;
    off_t size;
} DirectBlock;

// Inode 0 is root
// Inode * 128
typedef struct Inode
{
    unsigned int isValid : 1;
    DirectBlock inodeBlocks[DEFAULTINODEMAX];
} Inode;

typedef struct FileSystem
{
    SuperBlock superBlock;
    FreeBlockList fbl;
    Inode inodes[DEFAULTINODEMAX];
    DataBlock dataBlocks[DEFAULTBLOCKMAX];
} FileSystem;

void Fuse(int argc, char* argv[]);
void GetArguments(int argc, char* argv[], fuseArgStruct* fuseArgs);
void OpenFS(fuseArgStruct* fuseArgs, char* programPath);
FileSystem* SetupFS(fuseArgStruct* fuseArgs);
void RunFuse(FileSystem* fs, fuseArgStruct* fuseArgs);
void TearDownFS(void);
void FuseStructInit(fuseArgStruct* fuseStruct);
void FuseUsageError(char* programPath);
int zerosize(int fd);
int FindEmptyBitPosition(int number);
ino_t GetFreeInodeNumber(Inode inodes[]);
ino_t GetFreeBlockNumber(int fbl[]);
void SetFileSystemDefaults(FileSystem* fs);
void SetupRootDirectory(FileSystem* fs);

#endif