| 1 | # |
| 2 | |
| 3 | #include <signal.h> |
| 4 | |
| 5 | /* |
| 6 | * The following is for systems with botched signal() system entries |
| 7 | * which don't return the proper value for the previous signal. |
| 8 | */ |
| 9 | |
| 10 | int oldsigs[17]; |
| 11 | |
| 12 | static char *SccsId = "@(#)Signal.c 1.1 %G%"; |
| 13 | |
| 14 | int |
| 15 | (*Signal())(sig, spot) |
| 16 | int spot; |
| 17 | { |
| 18 | int ret; |
| 19 | |
| 20 | /* printf("Signal(%d, %.1o)\n", sig, spot); */ |
| 21 | if (sig < 1 || sig > 16) |
| 22 | return(-1); |
| 23 | ret = oldsigs[sig]; |
| 24 | oldsigs[sig] = (int) spot; |
| 25 | signal(sig, spot); |
| 26 | return(ret); |
| 27 | } |
| 28 | |
| 29 | Siginit() |
| 30 | { |
| 31 | register int i; |
| 32 | |
| 33 | for (i = 1; i < 17; i++) { |
| 34 | oldsigs[i] = (int) signal(i, SIG_IGN); |
| 35 | signal(i, (int (*)()) oldsigs[i]); |
| 36 | } |
| 37 | } |