1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
/*
* ioctl based topology -- gathers topology information
*
* Copyright (C) 2009 Karel Zak <kzak@redhat.com>
*
* This file may be redistributed under the terms of the
* GNU Lesser General Public License.
*
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include "topology.h"
static int probe_ioctl_tp(blkid_probe pr,
const struct blkid_idmag *mag __attribute__((__unused__)))
{
uint64_t u64;
int s32;
if (ioctl(pr->fd, BLKALIGNOFF, &s32) == -1)
return 1;
if (blkid_topology_set_alignment_offset(pr, s32))
return -1;
if (ioctl(pr->fd, BLKIOMIN, &s32) == -1)
return 1;
if (blkid_topology_set_minimum_io_size(pr, s32))
return -1;
if (ioctl(pr->fd, BLKIOOPT, &s32) == -1)
return 1;
if (blkid_topology_set_optimal_io_size(pr, s32))
return -1;
if (ioctl(pr->fd, BLKPBSZGET, &s32) == -1)
return 1;
if (blkid_topology_set_physical_sector_size(pr, s32))
return -1;
if (ioctl(pr->fd, BLKGETDISKSEQ, &u64) == -1)
return 1;
if (blkid_topology_set_physical_sector_size(pr, u64))
return -1;
return 0;
}
const struct blkid_idinfo ioctl_tp_idinfo =
{
.name = "ioctl",
.probefunc = probe_ioctl_tp,
.magics = BLKID_NONE_MAGIC
};
|
