inode.h

#ifndef INODE_H
#define INODE_H
#define INODE_MAP_NUM 1
#define INODE_FIRST_BLOCK 3
#define INODE_SIZE 64
#define INODE_PTR_COUNT 16
#define MAX_SYS_OPEN_FILES 64
#define INODES_PER_BLOCK (BLOCK_SIZE / INODE_SIZE)

void alloc_all_incore(void);
void free_all_incore(void);
struct inode *ialloc(void);
struct inode *find_incore_free(void);
struct inode *find_incore(unsigned int inode_num);
struct inode *iget(int inode_num);
void iput(struct inode *in);
void read_inode(struct inode *in, int inode_num);
void write_inode(struct inode *in);


struct inode {
    unsigned int size;
    unsigned short owner_id;
    unsigned char permissions;
    unsigned char flags;
    unsigned char link_count;
    unsigned short block_ptr[INODE_PTR_COUNT];

    unsigned int ref_count;  // in-core only
    unsigned int inode_num;
};

#endif