| 1 | #include "stdio.h" |
| 2 | #include "signal.h" |
| 3 | #include "lrnref" |
| 4 | |
| 5 | static int oldout; |
| 6 | static char tee[50]; |
| 7 | |
| 8 | maktee() |
| 9 | { |
| 10 | int fpip[2], in, out; |
| 11 | |
| 12 | if (tee[0] == 0) |
| 13 | sprintf(tee, "%s/tee", direct); |
| 14 | pipe(fpip); |
| 15 | in = fpip[0]; |
| 16 | out= fpip[1]; |
| 17 | if (fork() == 0) { |
| 18 | signal(SIGINT, SIG_IGN); |
| 19 | close(0); |
| 20 | close(out); |
| 21 | dup(in); |
| 22 | close(in); |
| 23 | execl (tee, "lrntee", 0); |
| 24 | fprintf(stderr, "Tee exec failed\n"); |
| 25 | exit(1); |
| 26 | } |
| 27 | close(in); |
| 28 | fflush(stdout); |
| 29 | oldout = dup(1); |
| 30 | close(1); |
| 31 | if (dup(out) != 1) |
| 32 | fprintf(stderr, "Error making tee for copyout\n"); |
| 33 | close(out); |
| 34 | return(1); |
| 35 | } |
| 36 | |
| 37 | untee() |
| 38 | { |
| 39 | int x; |
| 40 | |
| 41 | fflush(stdout); |
| 42 | close(1); |
| 43 | dup(oldout); |
| 44 | close(oldout); |
| 45 | wait(&x); |
| 46 | } |