fs.h

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#pragma once
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>

// GLOBALS

#define FS_PATH_MAX 255       
#define FS_PATH_SEPARATOR '/' 

// TYPES

typedef struct fs_volume_t fs_volume_t;

typedef struct {
  fs_volume_t *volume;        
  bool dir;                   
  char name[FS_PATH_MAX + 1]; 
  size_t size;                
  size_t pos; 
  void *ctx;  
} fs_file_t;

// LIFECYCLE

extern fs_volume_t *fs_vol_init_memory(size_t size);

extern fs_volume_t *fs_vol_init_file(const char *path, size_t size);

extern fs_volume_t *fs_vol_init_flash(size_t size);

extern void fs_vol_finalize(fs_volume_t *volume);

extern size_t fs_vol_size(fs_volume_t *volume, size_t *free);

extern bool fs_vol_readdir(fs_volume_t *volume, const char *path,
                           fs_file_t *iterator);

extern fs_file_t fs_vol_stat(fs_volume_t *volume, const char *path);

extern bool fs_vol_mkdir(fs_volume_t *volume, const char *path);

extern bool fs_vol_remove(fs_volume_t *volume, const char *path);

extern bool fs_vol_move(fs_volume_t *volume, const char *old_path,
                        const char *new_path);

fs_file_t fs_file_create(fs_volume_t *volume, const char *path);

fs_file_t fs_file_open(fs_volume_t *volume, const char *path, bool write);

bool fs_file_close(fs_file_t *file);

size_t fs_file_read(fs_file_t *file, void *buffer, size_t size);

size_t fs_file_write(fs_file_t *file, const void *buffer, size_t size);

bool fs_file_seek(fs_file_t *file, size_t offset);