#ifndef SOCKS_FS_H_
#define SOCKS_FS_H_

#include <socks/device.h>
#include <socks/queue.h>

#define SUPERBLOCK_ID_MAX 32

struct kext;
struct inode;
struct dentry;
struct super_block;

enum filesystem_flags {
	FS_REQUIRES_DEV = 0x01u,
};

struct super_block_ops {
	kern_status_t(*write_inode)(struct inode *);
	kern_status_t(*alloc_inode)(struct super_block *, struct inode **);
	void(*destroy_inode)(struct inode *);

	void(*destroy_super)(struct super_block *);
};

struct super_block {
	struct device *s_dev;
	unsigned long s_blocksize;
	unsigned long s_flags;
	struct dentry *s_root;
	struct super_block_ops *s_ops;
	char s_id[SUPERBLOCK_ID_MAX];
};

struct inode_ops {
	kern_status_t(*create)(struct inode *, struct dentry *, umode_t);
	kern_status_t(*mkdir)(struct inode *, struct dentry *, umode_t);
	kern_status_t(*lookup)(struct inode *, struct dentry *, unsigned int);
};

struct dname {
	uint64_t n_hash;
	const char *n_str;
};

struct inode {
	struct super_block *i_sb;
	unsigned long i_ino;
	unsigned long i_mode;
	unsigned long i_uid;
	unsigned long i_gid;
	unsigned long i_nlink;
	struct inode_ops *i_ops;
};

struct dentry {
	struct dname d_name;
	struct dentry *d_parent;
	struct inode *d_inode;
};

struct filesystem_driver {
	const char *fs_name;
	struct kext *fs_owner;
	struct queue_entry fs_head;
	enum filesystem_flags fs_flags;

	struct dentry *(*mount)(struct filesystem_driver *, struct device *, int flags);
};

#endif