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 #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 24 extern void abort (void) ATTRIBUTE_NORETURN; 25 26 #ifdef SIG_SETMASK 27 int 28 sigsetmask (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