54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
#include <linux/pagemap.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/genhd.h>
|
|
|
|
/*
|
|
* add_gd_partition adds a partitions details to the devices partition
|
|
* description.
|
|
*/
|
|
struct parsed_partitions {
|
|
struct block_device *bdev;
|
|
char name[BDEVNAME_SIZE];
|
|
struct {
|
|
sector_t from;
|
|
sector_t size;
|
|
int flags;
|
|
bool has_info;
|
|
struct partition_meta_info info;
|
|
} *parts;
|
|
int next;
|
|
int limit;
|
|
bool access_beyond_eod;
|
|
char *pp_buf;
|
|
};
|
|
|
|
void free_partitions(struct parsed_partitions *state);
|
|
|
|
struct parsed_partitions *
|
|
check_partition(struct gendisk *, struct block_device *);
|
|
|
|
static inline void *read_part_sector(struct parsed_partitions *state,
|
|
sector_t n, Sector *p)
|
|
{
|
|
if (n >= get_capacity(state->bdev->bd_disk)) {
|
|
state->access_beyond_eod = true;
|
|
return NULL;
|
|
}
|
|
return read_dev_sector(state->bdev, n, p);
|
|
}
|
|
|
|
static inline void
|
|
put_partition(struct parsed_partitions *p, int n, sector_t from, sector_t size)
|
|
{
|
|
if (n < p->limit) {
|
|
char tmp[1 + BDEVNAME_SIZE + 10 + 1];
|
|
|
|
p->parts[n].from = from;
|
|
p->parts[n].size = size;
|
|
snprintf(tmp, sizeof(tmp), " %s%d", p->name, n);
|
|
strlcat(p->pp_buf, tmp, PAGE_SIZE);
|
|
}
|
|
}
|
|
|
|
extern int warn_no_part;
|
|
|