198   int cestnepasun[4], pid;  in xpopen_both()  local
205       if (pipe(cestnepasun+(2*pid))) perror_exit("pipe");  in xpopen_both()
206       pipes[pid] = cestnepasun[pid+1];  in xpopen_both()
216       if (pipes[1] != -1) close(cestnepasun[2]);  in xpopen_both()
218         close(cestnepasun[1]);  in xpopen_both()
219         if (cestnepasun[0]) {  in xpopen_both()
220           dup2(cestnepasun[0], 0);  in xpopen_both()
221           close(cestnepasun[0]);  in xpopen_both()
225         dup2(cestnepasun[3], 1);  in xpopen_both()
226         dup2(cestnepasun[3], 2);  in xpopen_both()
227         if (cestnepasun[3] > 2 || !cestnepasun[3]) close(cestnepasun[3]);  in xpopen_both()
256     if (pipes[0] != -1) close(cestnepasun[0]);  in xpopen_both()
257     if (pipes[1] != -1) close(cestnepasun[3]);  in xpopen_both()