extern int sysfs_get_mnt_path(unsigned char *mnt_path, size_t len);
extern int sysfs_get_name_from_path(const unsigned char *path,
unsigned char *name, size_t len);
extern int sysfs_get_mnt_path(unsigned char *mnt_path, size_t len);
extern int sysfs_get_name_from_path(const unsigned char *path,
unsigned char *name, size_t len);