superblock.h

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#pragma once
 
#include <kernel/fs/sysfs.h>
#include <kernel/utils/ref.h>
 
#include <stdint.h>
#include <sys/io.h>
#include <sys/list.h>
 
typedef struct filesystem filesystem_t;
typedef struct superblock superblock_t;
typedef struct superblock_ops superblock_ops_t;
typedef struct dentry_ops dentry_ops_t;
typedef struct inode inode_t;
typedef struct dentry dentry_t;
 
typedef uint64_t superblock_id_t;
 
typedef struct superblock
{
    ref_t ref;
    list_entry_t entry;
    superblock_id_t id;
    uint64_t blockSize;
    uint64_t maxFileSize;
    void* private;
    dentry_t* root;
    const superblock_ops_t* ops;
    const dentry_ops_t* dentryOps;
    const filesystem_t* fs;
    char deviceName[MAX_NAME];
    atomic_uint64_t mountCount;
} superblock_t;
 
typedef struct superblock_ops
{
    inode_t* (*allocInode)(superblock_t* superblock);
    void (*freeInode)(superblock_t* superblock, inode_t* inode);
    void (*cleanup)(superblock_t* superblock);
    void (*unmount)(superblock_t* superblock);
} superblock_ops_t;
 
superblock_t* superblock_new(const filesystem_t* fs, const char* deviceName, const superblock_ops_t* ops,
    const dentry_ops_t* dentryOps);
 
void superblock_inc_mount_count(superblock_t* superblock);
 
void superblock_dec_mount_count(superblock_t* superblock);