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#ifndef _LINUX_BLKPG_H

#define _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

/* 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 /* _LINUX_BLKPG_H */