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kernel/linux-imx6_3.14.28/block/partitions/karma.c 1.08 KB
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  /*
   *  fs/partitions/karma.c
   *  Rio Karma partition info.
   *
   *  Copyright (C) 2006 Bob Copeland (me@bobcopeland.com)
   *  based on osf.c
   */
  
  #include "check.h"
  #include "karma.h"
  
  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;
  	} __attribute__((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, "
  ", PAGE_SIZE);
  	put_dev_sector(sect);
  	return 1;
  }