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 
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 */
17 
18 #include <ansidecl.h>
19 /* Including <sys/types.h> seems to be needed by ISC. */
20 #include <sys/types.h>
21 #include <signal.h>
22 
23 extern void abort (void) ATTRIBUTE_NORETURN;
24 
25 #ifdef SIG_SETMASK
26 int
sigsetmask(int set)27 sigsetmask (int set)
28 {
29     sigset_t new_sig;
30     sigset_t old_sig;
31 
32     sigemptyset (&new_sig);
33     if (set != 0) {
34       abort();	/* FIXME, we don't know how to translate old mask to new */
35     }
36     sigprocmask(SIG_SETMASK, &new_sig, &old_sig);
37     return 1;	/* FIXME, we always return 1 as old value.  */
38 }
39 #endif
40