send_command
void send_command(ccb_t *, ccb_disp_t, bool, bool);
send_command(ccb, CCBDISP_SCSIPI, waitok, FALSE);
send_command(ccb, CCBDISP_WAIT, TRUE, immed);
exit(send_command(fd, &command, &reply));
if ((rval = send_command(fd, &command, &reply)) == 0) {
static int send_command(int, struct apm_command *, struct apm_reply *);