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
|
/*
* Copyright (c) Red Hat 2014.
* Copyright (c) International Business Machines Corp., 2002
* This code contributed by Mike Mason <mmlnx@us.ibm.com>
*
* 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.
*/
#include <fcntl.h>
#include "pmapi.h"
#include "pmda.h"
#include "indom.h"
#include "proc_uptime.h"
int
refresh_proc_uptime(proc_uptime_t *proc_uptime)
{
char buf[MAXPATHLEN];
int fd, n;
float uptime = 0.0, idletime = 0.0;
memset(proc_uptime, 0, sizeof(proc_uptime_t));
snprintf(buf, sizeof(buf), "%s/proc/uptime", linux_statspath);
if ((fd = open(buf, O_RDONLY)) < 0)
return -oserror();
n = read(fd, buf, sizeof(buf));
close(fd);
if (n < 0)
return -oserror();
else if (n > 0)
n--;
buf[n] = '\0';
sscanf((const char *)buf, "%f %f", &uptime, &idletime);
proc_uptime->uptime = (unsigned long) uptime;
proc_uptime->idletime = (unsigned long) idletime;
return 0;
}
|
