su_popen
FILE *su_popen(char *, char *, int);
if ((fd = su_popen(user, cmdbuf, MAXTIME_FOR_CANCEL)) == NULL) {
if ((fd = su_popen(user, cmdbuf, MAXTIME_FOR_CANCEL)) == NULL) {
if ((fd = su_popen(user, xcmd, MAXTIME_FOR_PRINT)) == NULL) {
p = su_popen(user, buff, MAXTIME_FOR_QUEUE);
p = su_popen(user, buff, MAXTIME_FOR_QUEUE);