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61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
4 years ago
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef __LINUX_BLKPG_H
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#define __LINUX_BLKPG_H
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/*
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* Partition table and disk geometry handling
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*
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* A single ioctl with lots of subfunctions:
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*
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* Device number stuff:
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* get_whole_disk() (given the device number of a partition,
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* find the device number of the encompassing disk)
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* get_all_partitions() (given the device number of a disk, return the
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* device numbers of all its known partitions)
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*
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* Partition stuff:
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* add_partition()
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* delete_partition()
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* test_partition_in_use() (also for test_disk_in_use)
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*
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* Geometry stuff:
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* get_geometry()
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* set_geometry()
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* get_bios_drivedata()
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*
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* For today, only the partition stuff - aeb, 990515
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*/
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#include <linux/ioctl.h>
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#define BLKPG _IO(0x12,105)
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/* The argument structure */
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struct blkpg_ioctl_arg {
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int op;
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int flags;
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int datalen;
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void *data;
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};
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/* The subfunctions (for the op field) */
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#define BLKPG_ADD_PARTITION 1
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#define BLKPG_DEL_PARTITION 2
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#define BLKPG_RESIZE_PARTITION 3
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/* Sizes of name fields. Unused at present. */
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#define BLKPG_DEVNAMELTH 64
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#define BLKPG_VOLNAMELTH 64
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/* The data structure for ADD_PARTITION and DEL_PARTITION */
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struct blkpg_partition {
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long long start; /* starting offset in bytes */
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long long length; /* length in bytes */
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int pno; /* partition number */
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char devname[BLKPG_DEVNAMELTH]; /* partition name, like sda5 or c0d1p2,
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to be used in kernel messages */
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char volname[BLKPG_VOLNAMELTH]; /* volume label */
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};
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#endif /* __LINUX_BLKPG_H */
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