| 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 | */ |
| 9 | struct 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 | |
| 25 | void free_partitions(struct parsed_partitions *state); |
| 26 | |
| 27 | struct parsed_partitions * |
| 28 | check_partition(struct gendisk *, struct block_device *); |
| 29 | |
| 30 | static 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 | |
| 40 | static inline void |
| 41 | put_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 | |
| 53 | extern int warn_no_part; |
| 54 | |