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
10Sets the signal mask to the one provided in @var{set} and returns
11the old mask (which, for libiberty's implementation, will always
12be 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
23extern void abort (void) ATTRIBUTE_NORETURN;
24
25#ifdef SIG_SETMASK
26int
27sigsetmask (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