|  | #ifndef _LINUX_SUSPEND_IOCTLS_H | 
|  | #define _LINUX_SUSPEND_IOCTLS_H | 
|  |  | 
|  | /* | 
|  | * This structure is used to pass the values needed for the identification | 
|  | * of the resume swap area from a user space to the kernel via the | 
|  | * SNAPSHOT_SET_SWAP_AREA ioctl | 
|  | */ | 
|  | struct resume_swap_area { | 
|  | loff_t offset; | 
|  | u_int32_t dev; | 
|  | } __attribute__((packed)); | 
|  |  | 
|  | #define SNAPSHOT_IOC_MAGIC	'3' | 
|  | #define SNAPSHOT_FREEZE			_IO(SNAPSHOT_IOC_MAGIC, 1) | 
|  | #define SNAPSHOT_UNFREEZE		_IO(SNAPSHOT_IOC_MAGIC, 2) | 
|  | #define SNAPSHOT_ATOMIC_RESTORE		_IO(SNAPSHOT_IOC_MAGIC, 4) | 
|  | #define SNAPSHOT_FREE			_IO(SNAPSHOT_IOC_MAGIC, 5) | 
|  | #define SNAPSHOT_FREE_SWAP_PAGES	_IO(SNAPSHOT_IOC_MAGIC, 9) | 
|  | #define SNAPSHOT_S2RAM			_IO(SNAPSHOT_IOC_MAGIC, 11) | 
|  | #define SNAPSHOT_SET_SWAP_AREA		_IOW(SNAPSHOT_IOC_MAGIC, 13, \ | 
|  | struct resume_swap_area) | 
|  | #define SNAPSHOT_GET_IMAGE_SIZE		_IOR(SNAPSHOT_IOC_MAGIC, 14, loff_t) | 
|  | #define SNAPSHOT_PLATFORM_SUPPORT	_IO(SNAPSHOT_IOC_MAGIC, 15) | 
|  | #define SNAPSHOT_POWER_OFF		_IO(SNAPSHOT_IOC_MAGIC, 16) | 
|  | #define SNAPSHOT_CREATE_IMAGE		_IOW(SNAPSHOT_IOC_MAGIC, 17, int) | 
|  | #define SNAPSHOT_PREF_IMAGE_SIZE	_IO(SNAPSHOT_IOC_MAGIC, 18) | 
|  | #define SNAPSHOT_AVAIL_SWAP_SIZE	_IOR(SNAPSHOT_IOC_MAGIC, 19, loff_t) | 
|  | #define SNAPSHOT_ALLOC_SWAP_PAGE	_IOR(SNAPSHOT_IOC_MAGIC, 20, loff_t) | 
|  | #define SNAPSHOT_IOC_MAXNR	20 | 
|  |  | 
|  | #endif /* _LINUX_SUSPEND_IOCTLS_H */ |