linux/block/partitions/karma.c

61 lines
1.1 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* fs/partitions/karma.c
* Rio Karma partition info.
*
* Copyright (C) 2006 Bob Copeland (me@bobcopeland.com)
* based on osf.c
*/
#include "check.h"
#include <linux/compiler.h>
#define KARMA_LABEL_MAGIC 0xAB56
int karma_partition(struct parsed_partitions *state)
{
int i;
int slot = 1;
Sector sect;
unsigned char *data;
struct disklabel {
u8 d_reserved[270];
struct d_partition {
__le32 p_res;
u8 p_fstype;
u8 p_res2[3];
__le32 p_offset;
__le32 p_size;
} d_partitions[2];
u8 d_blank[208];
__le16 d_magic;
} __packed *label;
struct d_partition *p;
data = read_part_sector(state, 0, &sect);
if (!data)
return -1;
label = (struct disklabel *)data;
if (le16_to_cpu(label->d_magic) != KARMA_LABEL_MAGIC) {
put_dev_sector(sect);
return 0;
}
p = label->d_partitions;
for (i = 0 ; i < 2; i++, p++) {
if (slot == state->limit)
break;
if (p->p_fstype == 0x4d && le32_to_cpu(p->p_size)) {
put_partition(state, slot, le32_to_cpu(p->p_offset),
le32_to_cpu(p->p_size));
}
slot++;
}
strlcat(state->pp_buf, "\n", PAGE_SIZE);
put_dev_sector(sect);
return 1;
}