struct mutex buf_mutex; /* serialize access to 'buf' */
char *buf;
size_t bufsize;
- size_t (*read)(u64 *id, enum pstore_type_id *type,
+ int (*open)(struct pstore_info *psi);
+ int (*close)(struct pstore_info *psi);
+ ssize_t (*read)(u64 *id, enum pstore_type_id *type,
struct timespec *time);
u64 (*write)(enum pstore_type_id type, size_t size);
int (*erase)(u64 id);