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#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
24extern void abort (void) ATTRIBUTE_NORETURN;
25
26#ifdef SIG_SETMASK
27int
28sigsetmask (int set)
29{
30    sigset_t new_sig;
31    sigset_t old_sig;
32
33    sigemptyset (&new_sig);
34    if (set != 0) {
35      abort();	/* FIXME, we don't know how to translate old mask to new */
36    }
37    sigprocmask(SIG_SETMASK, &new_sig, &old_sig);
38    return 1;	/* FIXME, we always return 1 as old value.  */
39}
40#endif
41