/* | |
* fs/partitions/osf.c | |
* | |
* Code extracted from drivers/block/genhd.c | |
* | |
* Copyright (C) 1991-1998 Linus Torvalds | |
* Re-organised Feb 1998 Russell King | |
*/ | |
#include "check.h" | |
#include "osf.h" | |
int osf_partition(struct parsed_partitions *state, struct block_device *bdev) | |
{ | |
int i; | |
int slot = 1; | |
Sector sect; | |
unsigned char *data; | |
struct disklabel { | |
__le32 d_magic; | |
__le16 d_type,d_subtype; | |
u8 d_typename[16]; | |
u8 d_packname[16]; | |
__le32 d_secsize; | |
__le32 d_nsectors; | |
__le32 d_ntracks; | |
__le32 d_ncylinders; | |
__le32 d_secpercyl; | |
__le32 d_secprtunit; | |
__le16 d_sparespertrack; | |
__le16 d_sparespercyl; | |
__le32 d_acylinders; | |
__le16 d_rpm, d_interleave, d_trackskew, d_cylskew; | |
__le32 d_headswitch, d_trkseek, d_flags; | |
__le32 d_drivedata[5]; | |
__le32 d_spare[5]; | |
__le32 d_magic2; | |
__le16 d_checksum; | |
__le16 d_npartitions; | |
__le32 d_bbsize, d_sbsize; | |
struct d_partition { | |
__le32 p_size; | |
__le32 p_offset; | |
__le32 p_fsize; | |
u8 p_fstype; | |
u8 p_frag; | |
__le16 p_cpg; | |
} d_partitions[8]; | |
} * label; | |
struct d_partition * partition; | |
data = read_dev_sector(bdev, 0, §); | |
if (!data) | |
return -1; | |
label = (struct disklabel *) (data+64); | |
partition = label->d_partitions; | |
if (le32_to_cpu(label->d_magic) != DISKLABELMAGIC) { | |
put_dev_sector(sect); | |
return 0; | |
} | |
if (le32_to_cpu(label->d_magic2) != DISKLABELMAGIC) { | |
put_dev_sector(sect); | |
return 0; | |
} | |
for (i = 0 ; i < le16_to_cpu(label->d_npartitions); i++, partition++) { | |
if (slot == state->limit) | |
break; | |
if (le32_to_cpu(partition->p_size)) | |
put_partition(state, slot, | |
le32_to_cpu(partition->p_offset), | |
le32_to_cpu(partition->p_size)); | |
slot++; | |
} | |
printk("\n"); | |
put_dev_sector(sect); | |
return 1; | |
} |