File syn_vfs.h¶

File List > src > syntropic > storage > syn_vfs.h
#ifndef SYN_VFS_H
#define SYN_VFS_H

#include "../common/syn_defs.h"

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

#ifdef __cplusplus
extern "C" {
#endif

#ifndef SYN_VFS_MAX_OPEN_FILES
#define SYN_VFS_MAX_OPEN_FILES 4 
#endif

#ifndef SYN_VFS_MAX_OPEN_DIRS
#define SYN_VFS_MAX_OPEN_DIRS 2 
#endif

#ifndef SYN_VFS_MAX_MOUNTS
#define SYN_VFS_MAX_MOUNTS 2 
#endif
#define SYN_O_RDONLY 0x00 
#define SYN_O_WRONLY 0x01 
#define SYN_O_RDWR 0x02   
#define SYN_O_CREAT 0x04  
#define SYN_O_APPEND 0x08 
#define SYN_O_TRUNC 0x10  
#define SYN_SEEK_SET 0 
#define SYN_SEEK_CUR 1 
#define SYN_SEEK_END 2 
typedef struct {
    char name[64]; 
    uint32_t size; 
    bool is_dir;   
} SYN_VfsDirEnt;

typedef struct SYN_VfsFile SYN_VfsFile; 
typedef struct SYN_VfsDir SYN_VfsDir;   
typedef struct {
    int (*open)(SYN_VfsFile *file, const char *path, int flags, void *fs_data); 
    int (*close)(SYN_VfsFile *file);                                
    int (*read)(SYN_VfsFile *file, void *buf, size_t len);          
    int (*write)(SYN_VfsFile *file, const void *buf, size_t len);   
    int32_t (*seek)(SYN_VfsFile *file, int32_t offset, int whence); 
    int32_t (*tell)(SYN_VfsFile *file);                             
    int (*stat)(const char *path, SYN_VfsDirEnt *ent,
                void *fs_data); 
    int (*rename)(const char *old_path, const char *new_path, void *fs_data); 
    int (*unlink)(const char *path, void *fs_data);                   
    int (*mkdir)(const char *path, void *fs_data);                    
    int (*opendir)(SYN_VfsDir *dir, const char *path, void *fs_data); 
    int (*readdir)(SYN_VfsDir *dir, SYN_VfsDirEnt *ent);              
    int (*closedir)(SYN_VfsDir *dir);                                 
} SYN_VfsOps;

struct SYN_VfsFile {
    const SYN_VfsOps *ops; 
    void *fs_file;         
    bool is_open;          
};

struct SYN_VfsDir {
    const SYN_VfsOps *ops; 
    void *fs_dir;          
    bool is_open;          
};

typedef struct {
    const char *prefix;    
    size_t prefix_len;     
    const SYN_VfsOps *ops; 
    void *fs_data;         
} SYN_VfsMount;

/* ── API ────────────────────────────────────────────────────────────────── */

void syn_vfs_init(void);

SYN_Status syn_vfs_mount(const char *prefix, const SYN_VfsOps *ops, void *fs_data);

SYN_Status syn_vfs_unmount(const char *prefix);

int syn_vfs_stat(const char *path, SYN_VfsDirEnt *ent);

int syn_vfs_rename(const char *old_path, const char *new_path);

int syn_vfs_open(const char *path, int flags);

int syn_vfs_close(int fd);

int syn_vfs_read(int fd, void *buf, size_t len);

int syn_vfs_write(int fd, const void *buf, size_t len);

int32_t syn_vfs_seek(int fd, int32_t offset, int whence);

int32_t syn_vfs_tell(int fd);

int syn_vfs_unlink(const char *path);

int syn_vfs_mkdir(const char *path);

int syn_vfs_opendir(const char *path);

int syn_vfs_readdir(int dd, SYN_VfsDirEnt *ent);

int syn_vfs_closedir(int dd);

#ifdef __cplusplus
}
#endif

#endif /* SYN_VFS_H */