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252b5132 RH |
1 | /* Version of sigsetmask.c |
2 | Written by Steve Chamberlain (sac@cygnus.com). | |
3 | Contributed by Cygnus Support. | |
4 | This file is in the public doamin. */ | |
5 | ||
39423523 DD |
6 | /* |
7 | ||
8 | @deftypefn Supplemental int sigsetmask (int @var{set}) | |
9 | ||
10 | Sets the signal mask to the one provided in @var{set} and returns | |
11 | the old mask (which, for libiberty's implementation, will always | |
12 | be the value @code{1}). | |
13 | ||
14 | @end deftypefn | |
15 | ||
16 | */ | |
252b5132 RH |
17 | |
18 | #define _POSIX_SOURCE | |
19 | #include <ansidecl.h> | |
20 | /* Including <sys/types.h> seems to be needed by ISC. */ | |
21 | #include <sys/types.h> | |
22 | #include <signal.h> | |
23 | ||
1e45deed | 24 | extern void abort (void) ATTRIBUTE_NORETURN; |
74bcd529 | 25 | |
252b5132 RH |
26 | #ifdef SIG_SETMASK |
27 | int | |
1e45deed | 28 | sigsetmask (int set) |
252b5132 RH |
29 | { |
30 | sigset_t new; | |
31 | sigset_t old; | |
32 | ||
33 | sigemptyset (&new); | |
34 | if (set != 0) { | |
35 | abort(); /* FIXME, we don't know how to translate old mask to new */ | |
36 | } | |
37 | sigprocmask(SIG_SETMASK, &new, &old); | |
38 | return 1; /* FIXME, we always return 1 as old value. */ | |
39 | } | |
40 | #endif |