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/*
* getdata26.c -- implementations of kernel 2.4 specific data retrieval functions
*
* software distributed under the GPL, for license terms see the file
* COPYING in this directory
*
* (c) 2005 Dr. Andreas Mueller, Beratung und Entwicklung
* $Id: getdata26.c,v 1.2 2005/09/19 07:20:33 afm Exp $
*/
#include "getdata.h"
#include "getdata26.h"
#include <stdio.h>
#include <stdlib.h>
#include <syslog.h>
/*
The 2.6 kernel moves disk statistics information from /proc/partitions
to /proc/diskstat, and removes the two line header
*/
void get_disk26(struct statsusers *s) {
FILE *diskstat;
unsigned long long rio;
unsigned long long wio;
char line[1024];
char device[128];
int diskno;
/* open the /proc/diskstat file */
diskstat = fopen("/proc/diskstats", "r");
if (NULL == diskstat) {
return;
}
/* accumulate all the io statistics */
diskno = 0;
while ((diskno < 4) && (line == fgets(line, sizeof(line), diskstat))) {
sscanf(line, " %*d %*d %s "
"%lld %*d %*d %*d "
"%lld %*d %*d %*d "
"%*d %*d %*d\n",
device, &rio, &wio);
if (isdisk(device)) {
s->dk_xfer[diskno++] = rio + wio;
}
}
/* close the file */
fclose(diskstat);
}
void get_vm26(struct statsusers *s) {
char buf[1024];
FILE *vmstat;
/* open the /proc/vmstat file */
vmstat = fopen("/proc/vmstat", "r");
if (NULL == vmstat) {
return;
}
/* read the data from vmstat into the statsusers structure */
while (buf == fgets(buf, sizeof(buf), vmstat)) {
if (0 == strncmp(buf, "pgpgin", 6)) {
if (1 != sscanf(buf, "pgpgin %u", &s->v_pgpgin)) {
syslog(LOG_CRIT, "bad format in /proc/vmstat");
exit(EXIT_FAILURE);
}
}
if (0 == strncmp(buf, "pgpgout", 7)) {
if (1 != sscanf(buf, "pgpgout %u", &s->v_pgpgout)) {
syslog(LOG_CRIT, "bad format in /proc/vmstat");
exit(EXIT_FAILURE);
}
}
if (0 == strncmp(buf, "pswpin", 6)) {
if (1 != sscanf(buf, "pswpin %u", &s->v_pswpin)) {
syslog(LOG_CRIT, "bad format in /proc/vmstat");
exit(EXIT_FAILURE);
}
}
if (0 == strncmp(buf, "pswpout", 7)) {
if (1 != sscanf(buf, "pswpout %u", &s->v_pswpout)) {
syslog(LOG_CRIT, "bad format in /proc/vmstat");
exit(EXIT_FAILURE);
}
}
}
/* close the file */
fclose(vmstat);
}
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