signal (SIGEMT, fatal_error_signal);
#endif
signal (SIGFPE, fatal_error_signal);
+#ifdef SIGBUS
signal (SIGBUS, fatal_error_signal);
+#endif
signal (SIGSEGV, fatal_error_signal);
+#ifdef SIGSYS
signal (SIGSYS, fatal_error_signal);
+#endif
signal (SIGTERM, fatal_error_signal);
#ifdef SIGXCPU
signal (SIGXCPU, fatal_error_signal);
init_signals ()
{
-#ifdef POSIX_SIGNALS
- sigemptyset (&signal_empty_mask);
- sigfillset (&signal_full_mask);
-#endif
+ sigemptyset (&empty_mask);
+ sigfillset (&full_mask);
}
-int (*signal_handler_t) ();
-
signal_handler_t
sys_signal (int signal_number, signal_handler_t action)
{
* always negligible. Fred Fish, Unisoft Systems Inc.
*/
+#ifndef HAVE_SYS_SIGLIST
char *sys_siglist[NSIG + 1] =
{
#ifdef AIX
#endif /* not AIX */
0
};
+#endif HAVE_SYS_SIGLIST
/*
* Warning, this function may not duplicate 4.2 action properly
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifdef POSIX_SIGNALS
+
+#include <signal.h>
+
#define SIGMASKTYPE sigset_t
#define SIGEMPTYMASK (empty_mask)
/* POSIX pretty much destroys any possibility of writing sigmask as a
macro in standard C. */
+#ifndef sigmask
#ifdef __GNUC__
#define sigmask(SIG) \
({ \
#else /* ! defined (__GNUC__) */
#define sigmask(SIG) (sys_sigmask (SIG))
#endif /* ! defined (__GNUC__) */
+#endif
#define sigpause(SIG) sys_sigpause(SIG)
#define sigblock(SIG) sys_sigblock(SIG)
#define sighold(SIG) ONLY_USED_IN_BSD_4_1
#define sigrelse(SIG) ONLY_USED_IN_BSD_4_1
-int (*sys_signal (int signal_number, int (*action)())) ();
-int sys_sigpause (int signal_number);
-sigset_t sys_sigblock (sigset_t new_mask);
+/* Whether this is what all systems want or not, this is what
+ appears to be assumed in the source, for example data.c:arith_error() */
+typedef RETSIGTYPE (*signal_handler_t) (int);
+
+signal_handler_t sys_signal (int signal_number, int (*action)());
+int sys_sigpause (sigset_t new_mask);
+sigset_t sys_sigblock (sigset_t new_mask);
sigset_t sys_sigunblock (sigset_t new_mask);
sigset_t sys_sigsetmask (sigset_t new_mask);