LXR linux/block/partitions/karma.c

   1/*
   2 *  fs/partitions/karma.c
   3 *  Rio Karma partition info.
   4 *
   5 *  Copyright (C) 2006 Bob Copeland (me@bobcopeland.com)
   6 *  based on osf.c
   7 */
   8
   9#include "check.h"
  10#include "karma.h"
  11#include <linux/compiler.h>
  12
  13int karma_partition(struct parsed_partitions *state)
  14{
  15        int i;
  16        int slot = 1;
  17        Sector sect;
  18        unsigned char *data;
  19        struct disklabel {
  20                u8 d_reserved[270];
  21                struct d_partition {
  22                        __le32 p_res;
  23                        u8 p_fstype;
  24                        u8 p_res2[3];
  25                        __le32 p_offset;
  26                        __le32 p_size;
  27                } d_partitions[2];
  28                u8 d_blank[208];
  29                __le16 d_magic;
  30        } __packed *label;
  31        struct d_partition *p;
  32
  33        data = read_part_sector(state, 0, &sect);
  34        if (!data)
  35                return -1;
  36
  37        label = (struct disklabel *)data;
  38        if (le16_to_cpu(label->d_magic) != KARMA_LABEL_MAGIC) {
  39                put_dev_sector(sect);
  40                return 0;
  41        }
  42
  43        p = label->d_partitions;
  44        for (i = 0 ; i < 2; i++, p++) {
  45                if (slot == state->limit)
  46                        break;
  47
  48                if (p->p_fstype == 0x4d && le32_to_cpu(p->p_size)) {
  49                        put_partition(state, slot, le32_to_cpu(p->p_offset),
  50                                le32_to_cpu(p->p_size));
  51                }
  52                slot++;
  53        }
  54        strlcat(state->pp_buf, "\n", PAGE_SIZE);
  55        put_dev_sector(sect);
  56        return 1;
  57}
  58
  59