block: move struct partition out of genhd.h

struct partition is the on-disk format of a MSDOS partition table entry.
Move it out of genhd.h into a new msdos_partition.h header and give it
a msdos_ prefix to avoid confusion.
Also move the magic number from block/partitions/msdos.h to the new
header so that it can be used by the SCSI drivers looking at the DOS
partition tables.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2020-03-24 08:25:26 +01:00
committed by Jens Axboe
parent cbb5cb3b29
commit 1442f76d43
9 changed files with 51 additions and 47 deletions

View File

@@ -0,0 +1,20 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_MSDOS_PARTITION_H
#define _LINUX_MSDOS_PARTITION_H
#define MSDOS_LABEL_MAGIC 0xAA55
struct msdos_partition {
u8 boot_ind; /* 0x80 - active */
u8 head; /* starting head */
u8 sector; /* starting sector */
u8 cyl; /* starting cylinder */
u8 sys_ind; /* What partition type */
u8 end_head; /* end head */
u8 end_sector; /* end sector */
u8 end_cyl; /* end cylinder */
__le32 start_sect; /* starting sector counting from 0 */
__le32 nr_sects; /* nr of sectors in partition */
} __packed;
#endif /* LINUX_MSDOS_PARTITION_H */