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 "karma.h" 12 #include <linux/compiler.h> 13 14 int karma_partition(struct parsed_partitions *state) 15 { 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; 31 } __packed *label; 32 struct d_partition *p; 33 34 data = read_part_sector(state, 0, §); 35 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 } 55 strlcat(state->pp_buf, "\n", PAGE_SIZE); 56 put_dev_sector(sect); 57 return 1; 58 } 59 60