lfc_ping - check if name server is alive and return its version number
int lfc_ping (char *server, char *info)
lfc_ping checks if the name server is alive and returns its version
server specifies the LFC Name Server hostname. If NULL, the LFC_HOST
environment variable is used.
info points at a buffer to receive the information (currently the
version number). The buffer must be at least 256 characters
This routine returns 0 if the operation was successful or -1 if the
operation failed. In the latter case, serrno is set appropriately.
EFAULT info is a NULL pointer.
SENOSHOST Host unknown.
SENOSSERV Service unknown.
SECOMERR Communication error.
ENSNACT Name server is not running or is being shutdown.