int selfpipe_trapset (sigset_t const *set)
{
unsigned int i = 1 ;
if (selfpipe_fd < 0) return (errno = EBADF, -1) ;
for (; i <= NSIG ; i++)
{
register int h = sigismember(set, i) ;
if (h < 0) continue ;
if (h)
{
if (sig_catcha(i, &selfpipe_ssa) < 0) break ;
}
else if (sigismember(&selfpipe_caught, i))
{
if (sig_restore(i) < 0) break ;
}
}
if (i <= NSIG)
{
int e = errno ;
sig_restoreto(set, i) ;
errno = e ;
return -1 ;
}
selfpipe_caught = *set ;
return 0 ;
}
int sig_catch (int sig, skasighandler_t_ref f)
{
struct skasigaction ssa = { f, SKASA_MASKALL | SKASA_NOCLDSTOP } ;
return sig_catcha(sig, &ssa) ;
}
