Commit | Line | Data |
---|---|---|
4ae3bade KS |
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 | ||
79ddb121 | 12 | static char *SccsId = "@(#)Signal.c 2.1 %G%"; |
4ae3bade KS |
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 | } |