linux-stable/include/linux/blkpg.h
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

57 lines
1.5 KiB
C

#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/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 */