linux/block/partitions/check.h
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   1#include <linux/pagemap.h>
   2#include <linux/blkdev.h>
   3#include <linux/genhd.h>
   4
   5/*
   6 * add_gd_partition adds a partitions details to the devices partition
   7 * description.
   8 */
   9struct parsed_partitions {
  10        struct block_device *bdev;
  11        char name[BDEVNAME_SIZE];
  12        struct {
  13                sector_t from;
  14                sector_t size;
  15                int flags;
  16                bool has_info;
  17                struct partition_meta_info info;
  18        } parts[DISK_MAX_PARTS];
  19        int next;
  20        int limit;
  21        bool access_beyond_eod;
  22        char *pp_buf;
  23};
  24
  25struct parsed_partitions *
  26check_partition(struct gendisk *, struct block_device *);
  27
  28static inline void *read_part_sector(struct parsed_partitions *state,
  29                                     sector_t n, Sector *p)
  30{
  31        if (n >= get_capacity(state->bdev->bd_disk)) {
  32                state->access_beyond_eod = true;
  33                return NULL;
  34        }
  35        return read_dev_sector(state->bdev, n, p);
  36}
  37
  38static inline void
  39put_partition(struct parsed_partitions *p, int n, sector_t from, sector_t size)
  40{
  41        if (n < p->limit) {
  42                char tmp[1 + BDEVNAME_SIZE + 10 + 1];
  43
  44                p->parts[n].from = from;
  45                p->parts[n].size = size;
  46                snprintf(tmp, sizeof(tmp), " %s%d", p->name, n);
  47                strlcat(p->pp_buf, tmp, PAGE_SIZE);
  48        }
  49}
  50
  51extern int warn_no_part;
  52
  53
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