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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
/*
* Copyright (C) 2002 Sistina Software
*
* This file is released under the GPL.
*
*/
/*
* Changelog
*
* 05/02/2002 - First drop [HM]
*/
#include "tools.h"
int disks_found = 0;
int parts_found = 0;
int pv_disks_found = 0;
int pv_parts_found = 0;
int max_len;
static int _get_max_dev_name_len(struct dev_filter *filter)
{
int len = 0;
int max_len = 0;
struct dev_iter *iter;
struct device *dev;
if (!(iter = dev_iter_create(filter))) {
log_error("dev_iter_create failed");
return 0;
}
/* Do scan */
for (dev = dev_iter_get(iter); dev; dev = dev_iter_get(iter)) {
len = strlen(dev_name(dev));
if (len > max_len)
max_len = len;
}
dev_iter_destroy(iter);
return max_len;
}
static void _count(struct device *dev, int *disks, int *parts)
{
int c = dev_name(dev)[strlen(dev_name(dev)) - 1];
if (!isdigit(c))
(*disks)++;
else
(*parts)++;
}
static void _print(struct device *dev, uint64_t size, char *what)
{
char *dummy = display_size(size / 2, SIZE_SHORT);
const char *name = dev_name(dev);
if (!what)
what = "";
log_print("%-*s [%15s] %s", max_len, name, dummy, what);
dbg_free(dummy);
}
static int _check_device(struct device *dev)
{
char buffer;
uint64_t size;
if (!dev_open(dev, 0)) {
return 0;
}
if (dev_read(dev, 0, 1, &buffer) != 1) {
dev_close(dev);
return 0;
}
if (!dev_get_size(dev, &size)) {
log_error("Couldn't get size of \"%s\"", dev_name(dev));
}
_print(dev, size, NULL);
_count(dev, &disks_found, &parts_found);
if (!dev_close(dev)) {
log_error("dev_close on \"%s\" failed", dev_name(dev));
return 0;
}
return 1;
}
int lvmdiskscan(struct cmd_context *cmd, int argc, char **argv)
{
uint64_t size;
struct dev_iter *iter;
struct device *dev;
struct label *label;
if (arg_count(cmd, lvmpartition_ARG))
log_print("WARNING: only considering LVM devices");
max_len = _get_max_dev_name_len(cmd->filter);
if (!(iter = dev_iter_create(cmd->filter))) {
log_error("dev_iter_create failed");
return 0;
}
/* Do scan */
for (dev = dev_iter_get(iter); dev; dev = dev_iter_get(iter)) {
/* Try if it is a PV first */
if ((label_read(dev, &label))) {
if (!dev_get_size(dev, &size)) {
log_error("Couldn't get size of \"%s\"",
dev_name(dev));
continue;
}
_print(dev, size, "LVM physical volume");
_count(dev, &pv_disks_found, &pv_parts_found);
continue;
}
/* If user just wants PVs we are done */
if (arg_count(cmd, lvmpartition_ARG))
continue;
/* What other device is it? */
if (!_check_device(dev))
continue;
}
dev_iter_destroy(iter);
/* Display totals */
if (!arg_count(cmd, lvmpartition_ARG)) {
log_print("%d disk%s",
disks_found, disks_found == 1 ? "" : "s");
log_print("%d partition%s",
parts_found, parts_found == 1 ? "" : "s");
}
log_print("%d LVM physical volume whole disk%s",
pv_disks_found, pv_disks_found == 1 ? "" : "s");
log_print("%d LVM physical volume%s",
pv_parts_found, pv_parts_found == 1 ? "" : "s");
return 0;
}
|
