blob: 52f8bd399396f3d1bf73836efe59bacc1ec2261d [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#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 Torvalds1da177e2005-04-16 15:20:36 -07008struct parsed_partitions {
Tejun Heo1493bf22010-05-15 20:09:30 +02009 struct block_device *bdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -070010 char name[BDEVNAME_SIZE];
11 struct {
12 sector_t from;
13 sector_t size;
14 int flags;
Tejun Heo689d6fa2008-08-25 19:56:16 +090015 } parts[DISK_MAX_PARTS];
Linus Torvalds1da177e2005-04-16 15:20:36 -070016 int next;
17 int limit;
Tejun Heob403a982010-05-15 20:09:31 +020018 bool access_beyond_eod;
Linus Torvalds1da177e2005-04-16 15:20:36 -070019};
20
Tejun Heo1493bf22010-05-15 20:09:30 +020021static inline void *read_part_sector(struct parsed_partitions *state,
22 sector_t n, Sector *p)
23{
Tejun Heob403a982010-05-15 20:09:31 +020024 if (n >= get_capacity(state->bdev->bd_disk)) {
25 state->access_beyond_eod = true;
26 return NULL;
27 }
Tejun Heo1493bf22010-05-15 20:09:30 +020028 return read_dev_sector(state->bdev, n, p);
29}
30
Linus Torvalds1da177e2005-04-16 15:20:36 -070031static inline void
32put_partition(struct parsed_partitions *p, int n, sector_t from, sector_t size)
33{
34 if (n < p->limit) {
35 p->parts[n].from = from;
36 p->parts[n].size = size;
37 printk(" %s%d", p->name, n);
38 }
39}
40
41extern int warn_no_part;
42