#ifndef _UAPI__LINUX_BLKPG_H#define _UAPI__LINUX_BLKPG_H /* * Partition table and disk geometry handling * * A single ioctl with lots of subfunctions: * * Device number stuff: *    get_whole_disk()		(given the device number of a partition, *                               find the device number of the encompassing disk) *    get_all_partitions()	(given the device number of a disk, return the *				 device numbers of all its known partitions) * * Partition stuff: *    add_partition() *    delete_partition() *    test_partition_in_use()	(also for test_disk_in_use) * * Geometry stuff: *    get_geometry() *    set_geometry() *    get_bios_drivedata() * * For today, only the partition stuff - aeb, 990515 */#include <linux/compiler.h>#include <linux/ioctl.h> #define BLKPG      _IO(0x12,105) /* The argument structure */struct blkpg_ioctl_arg {        int op;        int flags;        int datalen;        void __user *data;}; /* The subfunctions (for the op field) */#define BLKPG_ADD_PARTITION	1#define BLKPG_DEL_PARTITION	2#define BLKPG_RESIZE_PARTITION	3 /* Sizes of name fields. Unused at present. */#define BLKPG_DEVNAMELTH	64#define BLKPG_VOLNAMELTH	64 /* The data structure for ADD_PARTITION and DEL_PARTITION */struct blkpg_partition {	long long start;		/* starting offset in bytes */	long long length;		/* length in bytes */	int pno;			/* partition number */	char devname[BLKPG_DEVNAMELTH];	/* partition name, like sda5 or c0d1p2,					   to be used in kernel messages */	char volname[BLKPG_VOLNAMELTH];	/* volume label */}; #endif /* _UAPI__LINUX_BLKPG_H */