Munin contributed plugins

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include "common.h"

int load(int argc, char **argv) {

        FILE *f;

        int warn, crit;

        float val;

        char *s;

        if(argc > 1) {

                if(!strcmp(argv[1], "config")) {

                        s = getenv("load_warn");

                        if(s)

                                warn = atoi(s);

                        else

                                warn = 10;

                        s = getenv("load_crit");

                        if(s)

                                crit = atoi(s);

                        else

                                crit = 120;

                        puts("graph_title Load average\n"

                                "graph_args --base 1000 -l 0\n"

                                "graph_vlabel load\n"

                                "graph_scale no\n"

                                "graph_category system\n"

                                "load.label load");

                        printf("load.warning %d\nload.critical %d\n", warn, crit);

                        return 0;

                }

                if(!strcmp(argv[1], "autoconf"))

                        return writeyes();

        }

        if(!(f=fopen("/proc/loadavg", "r"))) {

                fputs("cannot open /proc/loadavg\n", stderr);

                return 1;

        }

        if(1 != fscanf(f, "%*f %f", &val)) {

                fputs("cannot read from /proc/loadavg\n", stderr);

                fclose(f);

                return 1;

        }

        fclose(f);

        printf("load.value %.2f\n", val);

        return 0;

}