| 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, n: 0, p: §); |
| 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(p: 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(p: state, n: slot, le32_to_cpu(p->p_offset), |
| 52 | le32_to_cpu(p->p_size)); |
| 53 | } |
| 54 | slot++; |
| 55 | } |
| 56 | strlcat(p: state->pp_buf, q: "\n", PAGE_SIZE); |
| 57 | put_dev_sector(p: sect); |
| 58 | return 1; |
| 59 | } |
| 60 | |
| 61 |