blob: 59812d705c3d1a0c1cc9df6ccd15f413a757e86b [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +01001// SPDX-License-Identifier: GPL-2.0
Bob Copeland0e6e1db2006-01-16 22:14:20 -08002/*
3 * fs/partitions/karma.c
4 * Rio Karma partition info.
5 *
6 * Copyright (C) 2006 Bob Copeland (me@bobcopeland.com)
7 * based on osf.c
8 */
9
10#include "check.h"
11#include "karma.h"
Gideon Israel Dsouzae3ebf0d2014-02-17 21:17:16 +053012#include <linux/compiler.h>
Bob Copeland0e6e1db2006-01-16 22:14:20 -080013
Tejun Heo1493bf22010-05-15 20:09:30 +020014int karma_partition(struct parsed_partitions *state)
Bob Copeland0e6e1db2006-01-16 22:14:20 -080015{
16 int i;
17 int slot = 1;
18 Sector sect;
19 unsigned char *data;
20 struct disklabel {
21 u8 d_reserved[270];
22 struct d_partition {
23 __le32 p_res;
24 u8 p_fstype;
25 u8 p_res2[3];
26 __le32 p_offset;
27 __le32 p_size;
28 } d_partitions[2];
29 u8 d_blank[208];
30 __le16 d_magic;
Gideon Israel Dsouzae3ebf0d2014-02-17 21:17:16 +053031 } __packed *label;
Bob Copeland0e6e1db2006-01-16 22:14:20 -080032 struct d_partition *p;
33
Tejun Heo1493bf22010-05-15 20:09:30 +020034 data = read_part_sector(state, 0, &sect);
Bob Copeland0e6e1db2006-01-16 22:14:20 -080035 if (!data)
36 return -1;
37
38 label = (struct disklabel *)data;
39 if (le16_to_cpu(label->d_magic) != KARMA_LABEL_MAGIC) {
40 put_dev_sector(sect);
41 return 0;
42 }
43
44 p = label->d_partitions;
45 for (i = 0 ; i < 2; i++, p++) {
46 if (slot == state->limit)
47 break;
48
49 if (p->p_fstype == 0x4d && le32_to_cpu(p->p_size)) {
50 put_partition(state, slot, le32_to_cpu(p->p_offset),
51 le32_to_cpu(p->p_size));
52 }
53 slot++;
54 }
Alexey Dobriyan9c867fb2010-08-10 18:03:14 -070055 strlcat(state->pp_buf, "\n", PAGE_SIZE);
Bob Copeland0e6e1db2006-01-16 22:14:20 -080056 put_dev_sector(sect);
57 return 1;
58}
59