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, §); 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 61