Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #include <linux/pagemap.h> |
| 2 | #include <linux/blkdev.h> |
| 3 | |
| 4 | /* |
| 5 | * add_gd_partition adds a partitions details to the devices partition |
| 6 | * description. |
| 7 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | struct parsed_partitions { |
Tejun Heo | 1493bf2 | 2010-05-15 20:09:30 +0200 | [diff] [blame] | 9 | struct block_device *bdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | char name[BDEVNAME_SIZE]; |
| 11 | struct { |
| 12 | sector_t from; |
| 13 | sector_t size; |
| 14 | int flags; |
Tejun Heo | 689d6fa | 2008-08-25 19:56:16 +0900 | [diff] [blame] | 15 | } parts[DISK_MAX_PARTS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | int next; |
| 17 | int limit; |
Tejun Heo | b403a98 | 2010-05-15 20:09:31 +0200 | [diff] [blame] | 18 | bool access_beyond_eod; |
Alexey Dobriyan | 9c867fb | 2010-08-10 18:03:14 -0700 | [diff] [blame^] | 19 | char *pp_buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | }; |
| 21 | |
Tejun Heo | 1493bf2 | 2010-05-15 20:09:30 +0200 | [diff] [blame] | 22 | static inline void *read_part_sector(struct parsed_partitions *state, |
| 23 | sector_t n, Sector *p) |
| 24 | { |
Tejun Heo | b403a98 | 2010-05-15 20:09:31 +0200 | [diff] [blame] | 25 | if (n >= get_capacity(state->bdev->bd_disk)) { |
| 26 | state->access_beyond_eod = true; |
| 27 | return NULL; |
| 28 | } |
Tejun Heo | 1493bf2 | 2010-05-15 20:09:30 +0200 | [diff] [blame] | 29 | return read_dev_sector(state->bdev, n, p); |
| 30 | } |
| 31 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | static inline void |
| 33 | put_partition(struct parsed_partitions *p, int n, sector_t from, sector_t size) |
| 34 | { |
| 35 | if (n < p->limit) { |
Alexey Dobriyan | 9c867fb | 2010-08-10 18:03:14 -0700 | [diff] [blame^] | 36 | char tmp[1 + BDEVNAME_SIZE + 10 + 1]; |
| 37 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | p->parts[n].from = from; |
| 39 | p->parts[n].size = size; |
Alexey Dobriyan | 9c867fb | 2010-08-10 18:03:14 -0700 | [diff] [blame^] | 40 | snprintf(tmp, sizeof(tmp), " %s%d", p->name, n); |
| 41 | strlcat(p->pp_buf, tmp, PAGE_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | } |
| 43 | } |
| 44 | |
| 45 | extern int warn_no_part; |
| 46 | |