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1450a4555d
The dos_partition_t struct defined in part_dos.h is nearly identical to the struct partition defined in part_efi.h. They differ primarily in how define their starting sector and number of sectors fields. The former uses unsigned char arrays while the latter uses __le32 types. Using __le32 is preferable, as it removes the ambiguity and potential misuse of a raw byte array. This also aligns the structure with how the Linux kernel defines it nowadays, which is the original source of it. To prepare for future consolidation where one of the data structures can be removed, this change aligns both definitions and updates all accessors for dos_partition_t. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2000
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*/
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#ifndef _DISK_PART_DOS_H
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#define _DISK_PART_DOS_H
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#define DOS_PART_DISKSIG_OFFSET 0x1b8
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#define DOS_PART_TBL_OFFSET 0x1be
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#define DOS_PART_MAGIC_OFFSET 0x1fe
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#define DOS_PBR_FSTYPE_OFFSET 0x36
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#define DOS_PBR32_FSTYPE_OFFSET 0x52
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#define DOS_PBR_MEDIA_TYPE_OFFSET 0x15
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#define DOS_MBR 0
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#define DOS_PBR 1
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#define DOS_PART_TYPE_EXTENDED 0x05
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#define DOS_PART_TYPE_EXTENDED_LBA 0x0F
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#define DOS_PART_TYPE_EXTENDED_LINUX 0x85
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#define DOS_PART_DEFAULT_GAP 2048
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typedef struct dos_partition {
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unsigned char boot_ind; /* 0x80 - active */
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unsigned char head; /* starting head */
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unsigned char sector; /* starting sector */
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unsigned char cyl; /* starting cylinder */
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unsigned char sys_ind; /* What partition type */
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unsigned char end_head; /* end head */
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unsigned char end_sector; /* end sector */
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unsigned char end_cyl; /* end cylinder */
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__le32 start_sect; /* starting sector counting from 0 */
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__le32 nr_sects; /* nr of sectors in partition */
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} __packed dos_partition_t;
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#endif /* _DISK_PART_DOS_H */
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