LXR linux/block/partitions/check.h

   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;
  19        int next;
  20        int limit;
  21        bool access_beyond_eod;
  22        char *pp_buf;
  23};
  24
  25void free_partitions(struct parsed_partitions *state);
  26
  27struct parsed_partitions *
  28check_partition(struct gendisk *, struct block_device *);
  29
  30static inline void *read_part_sector(struct parsed_partitions *state,
  31                                     sector_t n, Sector *p)
  32{
  33        if (n >= get_capacity(state->bdev->bd_disk)) {
  34                state->access_beyond_eod = true;
  35                return NULL;
  36        }
  37        return read_dev_sector(state->bdev, n, p);
  38}
  39
  40static inline void
  41put_partition(struct parsed_partitions *p, int n, sector_t from, sector_t size)
  42{
  43        if (n < p->limit) {
  44                char tmp[1 + BDEVNAME_SIZE + 10 + 1];
  45
  46                p->parts[n].from = from;
  47                p->parts[n].size = size;
  48                snprintf(tmp, sizeof(tmp), " %s%d", p->name, n);
  49                strlcat(p->pp_buf, tmp, PAGE_SIZE);
  50        }
  51}
  52
  53extern int warn_no_part;
  54
  55