1/* SPDX-License-Identifier: GPL-2.0 */
 2#include <linux/pagemap.h>
 3#include <linux/blkdev.h>
 4#include <linux/genhd.h>
 5
 6/*
 7 * add_gd_partition adds a partitions details to the devices partition
 8 * description.
 9 */
10struct parsed_partitions {
11	struct block_device *bdev;
12	char name[BDEVNAME_SIZE];
13	struct {
14		sector_t from;
15		sector_t size;
16		int flags;
17		bool has_info;
18		struct partition_meta_info info;
19	} *parts;
20	int next;
21	int limit;
22	bool access_beyond_eod;
23	char *pp_buf;
24};
25
26void free_partitions(struct parsed_partitions *state);
27
28struct parsed_partitions *
29check_partition(struct gendisk *, struct block_device *);
30
31static inline void *read_part_sector(struct parsed_partitions *state,
32				     sector_t n, Sector *p)
33{
34	if (n >= get_capacity(state->bdev->bd_disk)) {
35		state->access_beyond_eod = true;
36		return NULL;
37	}
38	return read_dev_sector(state->bdev, n, p);
39}
40
41static inline void
42put_partition(struct parsed_partitions *p, int n, sector_t from, sector_t size)
43{
44	if (n < p->limit) {
45		char tmp[1 + BDEVNAME_SIZE + 10 + 1];
46
47		p->parts[n].from = from;
48		p->parts[n].size = size;
49		snprintf(tmp, sizeof(tmp), " %s%d", p->name, n);
50		strlcat(p->pp_buf, tmp, PAGE_SIZE);
51	}
52}
53
54extern int warn_no_part;
55

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