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disk: dos: add some defines for the hardcoded numbers 

Add some handy defines for some hardcoded magic numbers related to
extended partition handling.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
This commit is contained in:
Marek Szyprowski 2020-12-23 13:55:11 +01:00 committed by Tom Rini
parent 92f1c89d0a
commit 80bd05f27f
2 changed files with 6 additions and 3 deletions
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6
disk/part_dos.c
View File

@ -42,9 +42,9 @@ static inline unsigned int le32_to_int(unsigned char *le32)
static inline int is_extended(int part_type)
{
return (part_type == 0x5 ||
part_type == 0xf ||
part_type == 0x85);
return (part_type == DOS_PART_TYPE_EXTENDED ||
part_type == DOS_PART_TYPE_EXTENDED_LBA ||
part_type == DOS_PART_TYPE_EXTENDED_LINUX);
}
static int get_bootable(dos_partition_t *p)

3
disk/part_dos.h
View File

@ -15,6 +15,9 @@
#define DOS_PBR_MEDIA_TYPE_OFFSET 0x15
#define DOS_MBR 0
#define DOS_PBR 1
#define DOS_PART_TYPE_EXTENDED 0x05
#define DOS_PART_TYPE_EXTENDED_LBA 0x0F
#define DOS_PART_TYPE_EXTENDED_LINUX 0x85
typedef struct dos_partition {
unsigned char boot_ind; /* 0x80 - active */