Merge tag 'sound-fix-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
[linux-2.6-microblaze.git] / block / partitions / karma.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
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 <linux/compiler.h>
12
13 #define KARMA_LABEL_MAGIC               0xAB56
14
15 int karma_partition(struct parsed_partitions *state)
16 {
17         int i;
18         int slot = 1;
19         Sector sect;
20         unsigned char *data;
21         struct disklabel {
22                 u8 d_reserved[270];
23                 struct d_partition {
24                         __le32 p_res;
25                         u8 p_fstype;
26                         u8 p_res2[3];
27                         __le32 p_offset;
28                         __le32 p_size;
29                 } d_partitions[2];
30                 u8 d_blank[208];
31                 __le16 d_magic;
32         } __packed *label;
33         struct d_partition *p;
34
35         data = read_part_sector(state, 0, &sect);
36         if (!data)
37                 return -1;
38
39         label = (struct disklabel *)data;
40         if (le16_to_cpu(label->d_magic) != KARMA_LABEL_MAGIC) {
41                 put_dev_sector(sect);
42                 return 0;
43         }
44
45         p = label->d_partitions;
46         for (i = 0 ; i < 2; i++, p++) {
47                 if (slot == state->limit)
48                         break;
49
50                 if (p->p_fstype == 0x4d && le32_to_cpu(p->p_size)) {
51                         put_partition(state, slot, le32_to_cpu(p->p_offset),
52                                 le32_to_cpu(p->p_size));
53                 }
54                 slot++;
55         }
56         strlcat(state->pp_buf, "\n", PAGE_SIZE);
57         put_dev_sector(sect);
58         return 1;
59 }
60