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contrib-munin/tools/munin-plugins-busybox/uptime.c
Helmut Grohne cbfa6b4578 support warning and critical environment variables
Like the mainline plugins do.
2013-01-30 12:14:28 +01:00

34 lines
724 B
C

#include <stdio.h>
#include <string.h>
#include "common.h"
int uptime(int argc, char **argv) {
FILE *f;
float uptime;
if(argc > 1) {
if(!strcmp(argv[1], "config")) {
puts("graph_title Uptime\n"
"graph_args --base 1000 -l 0 \n"
"graph_vlabel uptime in days\n"
"uptime.label uptime\n"
"uptime.draw AREA");
print_warncrit("uptime");
return 0;
}
if(!strcmp(argv[1], "autoconf"))
return writeyes();
}
if(!(f=fopen("/proc/uptime", "r"))) {
fputs("cannot open /proc/uptime\n", stderr);
return 1;
}
if(1 != fscanf(f, "%f", &uptime)) {
fputs("cannot read from /proc/uptime\n", stderr);
fclose(f);
return 1;
}
fclose(f);
printf("uptime.value %.2f\n", uptime/86400);
return 0;
}