forked from collectd/collectd
/
tape.c
133 lines (113 loc) · 3.27 KB
/
tape.c
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
/**
* collectd - src/tape.c
* Copyright (C) 2005,2006 Scott Garrett
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Authors:
* Scott Garrett <sgarrett at technomancer.com>
**/
#include "collectd.h"
#include "common.h"
#include "plugin.h"
#if !HAVE_LIBKSTAT
# error "No applicable input method."
#endif
#define MAX_NUMTAPE 256
extern kstat_ctl_t *kc;
static kstat_t *ksp[MAX_NUMTAPE];
static int numtape = 0;
static int tape_init (void)
{
kstat_t *ksp_chain;
numtape = 0;
if (kc == NULL)
return (-1);
for (numtape = 0, ksp_chain = kc->kc_chain;
(numtape < MAX_NUMTAPE) && (ksp_chain != NULL);
ksp_chain = ksp_chain->ks_next)
{
if (strncmp (ksp_chain->ks_class, "tape", 4) )
continue;
if (ksp_chain->ks_type != KSTAT_TYPE_IO)
continue;
ksp[numtape++] = ksp_chain;
}
return (0);
} /* int tape_init */
static void tape_submit (const char *plugin_instance,
const char *type,
derive_t read, derive_t write)
{
value_t values[2];
value_list_t vl = VALUE_LIST_INIT;
values[0].derive = read;
values[1].derive = write;
vl.values = values;
vl.values_len = 2;
sstrncpy (vl.host, hostname_g, sizeof (vl.host));
sstrncpy (vl.plugin, "tape", sizeof (vl.plugin));
sstrncpy (vl.plugin_instance, plugin_instance,
sizeof (vl.plugin_instance));
sstrncpy (vl.type, type, sizeof (vl.type));
plugin_dispatch_values (&vl);
} /* void tape_submit */
static int tape_read (void)
{
#if HAVE_KSTAT_IO_T_WRITES && HAVE_KSTAT_IO_T_NWRITES && HAVE_KSTAT_IO_T_WTIME
# define KIO_ROCTETS reads
# define KIO_WOCTETS writes
# define KIO_ROPS nreads
# define KIO_WOPS nwrites
# define KIO_RTIME rtime
# define KIO_WTIME wtime
#elif HAVE_KSTAT_IO_T_NWRITTEN && HAVE_KSTAT_IO_T_WRITES && HAVE_KSTAT_IO_T_WTIME
# define KIO_ROCTETS nread
# define KIO_WOCTETS nwritten
# define KIO_ROPS reads
# define KIO_WOPS writes
# define KIO_RTIME rtime
# define KIO_WTIME wtime
#else
# error "kstat_io_t does not have the required members"
#endif
static kstat_io_t kio;
int i;
if (kc == NULL)
return (-1);
if (numtape <= 0)
return (-1);
for (i = 0; i < numtape; i++)
{
if (kstat_read (kc, ksp[i], &kio) == -1)
continue;
if (strncmp (ksp[i]->ks_class, "tape", 4) == 0)
{
tape_submit (ksp[i]->ks_name, "tape_octets",
kio.KIO_ROCTETS, kio.KIO_WOCTETS);
tape_submit (ksp[i]->ks_name, "tape_ops",
kio.KIO_ROPS, kio.KIO_WOPS);
/* FIXME: Convert this to microseconds if necessary */
tape_submit (ksp[i]->ks_name, "tape_time",
kio.KIO_RTIME, kio.KIO_WTIME);
}
}
return (0);
}
void module_register (void)
{
plugin_register_init ("tape", tape_init);
plugin_register_read ("tape", tape_read);
}