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#include <stdio.h>
#include <stdlib.h>
#include "prfstatwrp.h"
#include <procinfo.h>
#include <sys/proc.h>
#include <nlist.h>
#include <sys/types.h>
#include <sys/times.h>
#define KMEM "/dev/kmem"
int kmem; /* file descriptor */
/* Indices in the nlist array */
#define X_AVENRUN 0
#define X_SYSINFO 1
#define X_VMKER 2
#define X_V 3
static struct nlist nlst[] = {
{ "avenrun", 0, 0, 0, 0, 0 },
{ "sysinfo", 0, 0, 0, 0, 0 },
{ "vmker", 0, 0, 0, 0, 0 },
{ "v", 0, 0, 0, 0, 0 },
{ NULL, 0, 0, 0, 0, 0 }
};
/* offsets in kernel */
static unsigned long avenrun_offset;
static unsigned long sysinfo_offset;
static unsigned long vmker_offset;
static unsigned long proc_offset;
static unsigned long v_offset;
struct proc *p_proc; /* a copy of the process table */
struct procentry64 *p_info;
struct var v_info; /* to determine nprocs */
int nprocs; /* maximum nr of procs in proctab */
int ncpus; /* nr of cpus installed */
int ptsize; /* size of process table in bytes */
void init() {
if ((kmem = open(KMEM, O_RDONLY)) == -1) {
perror(KMEM);
return ;
}
if (knlist(nlst, 1, sizeof(struct nlist)) == -1) {
perror("knlist, proc entry not found");
return;
}
avenrun_offset = nlst[X_AVENRUN].n_value;
sysinfo_offset = nlst[X_SYSINFO].n_value;
vmker_offset = nlst[X_VMKER].n_value;
v_offset = nlst[X_V].n_value;
getkval(v_offset, (caddr_t)&v_info, sizeof v_info, "v");
ncpus = v_info.v_ncpus;
nprocs = 20480;
ptsize = nprocs * sizeof (struct proc);
p_info = (struct procentry64 *)malloc(nprocs * sizeof (struct procentry64));
if (!p_info) {
zbx_error("not enough memory.");
return;
}
}
long get_num_procs()
{
struct procsinfo ps[8192];
pid_t index = 0;
int nprocs;
int i;
char state;
if ((nprocs = getprocs(&ps, sizeof(struct procsinfo), NULL, 0, &index, 8192)) > 0) {
return nprocs;
} else {
return -1;
}
}
long get_running_procs()
{
struct procentry64 *pp;
int running = 0, i, nproc;
pid_t procsindex = 0;
int ptsize_util;
struct proc *p;
init();
if ((nproc = getprocs(p_info, sizeof (struct procsinfo), NULL, 0,
&procsindex, nprocs)) > 0) {
for (pp=p_info, i=0; i < nproc;pp++, i++) {
if (pp->pi_state == SACTIVE && pp->pi_cpu != 0)
running++;
}
return running;
} else {
return -1;
}
}
double get_loadavg(int data_type) {
perfstat_cpu_total_t ub;
if (perfstat_cpu_total ((perfstat_id_t*)NULL, &ub, sizeof(perfstat_cpu_total_t),1) >= 0) {
switch(data_type) {
case CPU_LOADAVG:
return (double) ub.loadavg[0] / 65535;
break;
case CPU_LOADAVG5:
return (double) ub.loadavg[1] / 65535;
break;
case CPU_LOADAVG15:
return (double) ub.loadavg[2] / 65535;
break;
}
} else {
return -1;
}
}
u_longlong_t get_disk_io(int data_type) {
perfstat_disk_total_t ub;
if (perfstat_disk_total ((perfstat_id_t*)NULL, &ub, sizeof(perfstat_disk_total_t),1) >= 0) {
switch(data_type) {
case DISK_IO_RBLKS:
return ub.rblks;
break;
case DISK_IO_WBLKS:
return ub.wblks;
break;
case DISK_IO_TOTAL:
return ub.rblks + ub.wblks;
break;
}
} else {
return -1;
}
}
u_longlong_t get_disk_stat(char diskname[32], int data_type)
{
perfstat_id_t name;
perfstat_disk_t *ub;
int ndisk,i;
ub = malloc(sizeof(perfstat_disk_t)*1);
strcpy(name.name,diskname);
if (perfstat_disk (&name,ub,sizeof(perfstat_disk_t),1) >= 0) {
switch(data_type) {
case DISK_IO_RBLKS:
return ub[0].rblks;
break;
case DISK_IO_WBLKS:
return ub[0].wblks;
break;
}
} else {
return -1;
}
}
int getkval(unsigned long offset, caddr_t ptr, int size, char *refstr)
{
int upper_2gb = 0;
if (offset > 1<<31) {
upper_2gb = 1;
offset &= 0x7fffffff;
}
if (lseek(kmem, offset, SEEK_SET) != offset) {
return -1;
}
if (readx(kmem, ptr, size, upper_2gb) != size) {
if (*refstr == '!')
return 0;
else {
return -1;
}
}
return 1 ;
}
unsigned int get_uptime() {
struct tms tbuf;
time_t uptime;
time_t timeofday;
uptime = (times(&tbuf) / HZ);
return (unsigned int) uptime;
}
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