fh = fopen(filename, "r");
if (fh == NULL) {
char errbuf[1024];
WARNING("openvpn plugin: Unable to read \"%s\": %s", filename,
sstrerror(errno, errbuf, sizeof(errbuf)));
fh = fopen(filename, "r");
if (fh == NULL) {
char errbuf[1024];
WARNING("openvpn plugin: Unable to read \"%s\": %s", filename,
sstrerror(errno, errbuf, sizeof(errbuf)));