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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 | */ |
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 | |
55 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
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v3.9