1/*
2 *  fs/partitions/karma.c
3 *  Rio Karma partition info.
4 *
5 *  Copyright (C) 2006 Bob Copeland (me@bobcopeland.com)
6 *  based on osf.c
7 */
8
9#include "check.h"
10#include "karma.h"
11
12int karma_partition(struct parsed_partitions *state, struct block_device *bdev)
13{
14	int i;
15	int slot = 1;
16	Sector sect;
17	unsigned char *data;
18	struct disklabel {
19		u8 d_reserved[270];
20		struct d_partition {
21			__le32 p_res;
22			u8 p_fstype;
23			u8 p_res2[3];
24			__le32 p_offset;
25			__le32 p_size;
26		} d_partitions[2];
27		u8 d_blank[208];
28		__le16 d_magic;
29	} __attribute__((packed)) *label;
30	struct d_partition *p;
31
32	data = read_dev_sector(bdev, 0, &sect);
33	if (!data)
34		return -1;
35
36	label = (struct disklabel *)data;
37	if (le16_to_cpu(label->d_magic) != KARMA_LABEL_MAGIC) {
38		put_dev_sector(sect);
39		return 0;
40	}
41
42	p = label->d_partitions;
43	for (i = 0 ; i < 2; i++, p++) {
44		if (slot == state->limit)
45			break;
46
47		if (p->p_fstype == 0x4d && le32_to_cpu(p->p_size)) {
48			put_partition(state, slot, le32_to_cpu(p->p_offset),
49				le32_to_cpu(p->p_size));
50		}
51		slot++;
52	}
53	printk("\n");
54	put_dev_sector(sect);
55	return 1;
56}
57