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48 lines
1.2 KiB
48 lines
1.2 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* fs/partitions/ultrix.c |
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* |
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* Code extracted from drivers/block/genhd.c |
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* |
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* Re-organised Jul 1999 Russell King |
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*/ |
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#include "check.h" |
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int ultrix_partition(struct parsed_partitions *state) |
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{ |
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int i; |
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Sector sect; |
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unsigned char *data; |
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struct ultrix_disklabel { |
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s32 pt_magic; /* magic no. indicating part. info exits */ |
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s32 pt_valid; /* set by driver if pt is current */ |
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struct pt_info { |
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s32 pi_nblocks; /* no. of sectors */ |
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u32 pi_blkoff; /* block offset for start */ |
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} pt_part[8]; |
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} *label; |
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#define PT_MAGIC 0x032957 /* Partition magic number */ |
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#define PT_VALID 1 /* Indicates if struct is valid */ |
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data = read_part_sector(state, (16384 - sizeof(*label))/512, §); |
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if (!data) |
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return -1; |
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label = (struct ultrix_disklabel *)(data + 512 - sizeof(*label)); |
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if (label->pt_magic == PT_MAGIC && label->pt_valid == PT_VALID) { |
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for (i=0; i<8; i++) |
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if (label->pt_part[i].pi_nblocks) |
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put_partition(state, i+1, |
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label->pt_part[i].pi_blkoff, |
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label->pt_part[i].pi_nblocks); |
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put_dev_sector(sect); |
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strlcat(state->pp_buf, "\n", PAGE_SIZE); |
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return 1; |
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} else { |
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put_dev_sector(sect); |
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return 0; |
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} |
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}
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