pfctl_fopen
if ((fin = pfctl_fopen(la->filename, "r")) == NULL) {
if ((fin = pfctl_fopen(rulesopt, "r")) == NULL)
FILE *pfctl_fopen(const char *, const char *);
if ((in = pfctl_fopen(fp_filename, "r")) == NULL) {
fp = pfctl_fopen(file, "r");