/* sys/signal.h */

 #ifndef _SYS_SIGNAL_H

 #define _SYS_SIGNAL_H

 #ifdef __cplusplus

 extern "C" {

 #endif

 #include "_ansi.h"

 #ifndef __STRICT_ANSI__

 typedef unsigned long sigset_t;

 struct sigaction 

 {

 	void (*sa_handler)(int);

 	sigset_t sa_mask;

 	int sa_flags;

 };

 #define SA_NOCLDSTOP 1	/* only value supported now for sa_flags */

 #define SIG_SETMASK 0	/* set mask with sigprocmask() */

 #define SIG_BLOCK 1	/* set of signals to block */

 #define SIG_UNBLOCK 2	/* set of signals to, well, unblock */

 /* These depend upon the type of sigset_t, which right now 

    is always a long.. They're in the POSIX namespace, but

    are not ANSI. */

 #define sigaddset(what,sig) (*(what) |= (1<<(sig)))

 #define sigemptyset(what)   (*(what) = 0)

 int sigprocmask (int __how, const sigset_t *__a, sigset_t *__b);

 /* protos for functions found in winsup sources */

 #if defined(__CYGWIN32__)

 #undef sigaddset

 #undef sigemptyset

 /* The first argument to kill should be pid_t.  Right now

    <sys/types.h> always defines pid_t to be int.  If that ever

    changes, then we will need to do something else, perhaps along the

    lines of <machine/types.h>.  */

 int _EXFUN(kill, (int, int));

 int _EXFUN(sigaction, (int, const struct sigaction *, struct sigaction *));

 int _EXFUN(sigaddset, (sigset_t *, const int));

 int _EXFUN(sigdelset, (sigset_t *, const int));

 int _EXFUN(sigismember, (const sigset_t *, int));

 int _EXFUN(sigfillset, (sigset_t *));

 int _EXFUN(sigemptyset, (sigset_t *));

 int _EXFUN(sigpending, (sigset_t *));

 int _EXFUN(sigsuspend, (const sigset_t *));

 int _EXFUN(sigpause, (int));

 #endif

 #endif /* __STRICT_ANSI__ */

 #if defined(___AM29K__)

 /* These all need to be defined for ANSI C, but I don't think they are

    meaningful.  */

 #define SIGABRT 1

 #define SIGFPE 1

 #define SIGILL 1

 #define SIGINT 1

 #define SIGSEGV 1

 #define SIGTERM 1

 /* These need to be defined for POSIX, and some others do too.  */

 #define SIGHUP 1

 #define SIGQUIT 1

 #define NSIG 2

 #elif defined(__GO32__)

 #define SIGINT  1

 #define SIGKILL 2

 #define SIGPIPE 3

 #define SIGFPE  4

 #define SIGHUP  5

 #define SIGTERM 6

 #define SIGSEGV 7

 #define SIGTSTP 8

 #define SIGQUIT 9

 #define SIGTRAP 10

 #define SIGILL  11

 #define SIGEMT  12

 #define SIGALRM 13

 #define SIGBUS  14

 #define SIGLOST 15

 #define SIGSTOP 16

 #define SIGABRT 17

 #define SIGUSR1	18

 #define SIGUSR2	19

 #define NSIG    20

 #elif defined(__CYGWIN32__)	/* BSD signals symantics */

 #define	SIGHUP	1	/* hangup */

 #define	SIGINT	2	/* interrupt */

 #define	SIGQUIT	3	/* quit */

 #define	SIGILL	4	/* illegal instruction (not reset when caught) */

 #define	SIGTRAP	5	/* trace trap (not reset when caught) */

 #define	SIGABRT 6	/* used by abort */

 #define	SIGEMT	7	/* EMT instruction */

 #define	SIGFPE	8	/* floating point exception */

 #define	SIGKILL	9	/* kill (cannot be caught or ignored) */

 #define	SIGBUS	10	/* bus error */

 #define	SIGSEGV	11	/* segmentation violation */

 #define	SIGSYS	12	/* bad argument to system call */

 #define	SIGPIPE	13	/* write on a pipe with no one to read it */

 #define	SIGALRM	14	/* alarm clock */

 #define	SIGTERM	15	/* software termination signal from kill */

 #define	SIGURG	16	/* urgent condition on IO channel */

 #define	SIGSTOP	17	/* sendable stop signal not from tty */

 #define	SIGTSTP	18	/* stop signal from tty */

 #define	SIGCONT	19	/* continue a stopped process */

 #define	SIGCHLD	20	/* to parent on child stop or exit */

 #define	SIGCLD	20	/* System V name for SIGCHLD */

 #define	SIGTTIN	21	/* to readers pgrp upon background tty read */

 #define	SIGTTOU	22	/* like TTIN for output if (tp->t_local&LTOSTOP) */

 #define	SIGIO	23	/* input/output possible signal */

 #define	SIGPOLL	SIGIO	/* System V name for SIGIO */

 #define	SIGXCPU	24	/* exceeded CPU time limit */

 #define	SIGXFSZ	25	/* exceeded file size limit */

 #define	SIGVTALRM 26	/* virtual time alarm */

 #define	SIGPROF	27	/* profiling time alarm */

 #define	SIGWINCH 28	/* window changed */

 #define	SIGLOST 29	/* resource lost (eg, record-lock lost) */

 #define	SIGUSR1 30	/* user defined signal 1 */

 #define	SIGUSR2 31	/* user defined signal 2 */

 #define NSIG	32      /* signal 0 implied */

 #else

 #define	SIGHUP	1	/* hangup */

 #define	SIGINT	2	/* interrupt */

 #define	SIGQUIT	3	/* quit */

 #define	SIGILL	4	/* illegal instruction (not reset when caught) */

 #define	SIGTRAP	5	/* trace trap (not reset when caught) */

 #define	SIGIOT	6	/* IOT instruction */

 #define	SIGABRT 6	/* used by abort, replace SIGIOT in the future */

 #define	SIGEMT	7	/* EMT instruction */

 #define	SIGFPE	8	/* floating point exception */

 #define	SIGKILL	9	/* kill (cannot be caught or ignored) */

 #define	SIGBUS	10	/* bus error */

 #define	SIGSEGV	11	/* segmentation violation */

 #define	SIGSYS	12	/* bad argument to system call */

 #define	SIGPIPE	13	/* write on a pipe with no one to read it */

 #define	SIGALRM	14	/* alarm clock */

 #define	SIGTERM	15	/* software termination signal from kill */

 #if defined(__svr4__)

 /* svr4 specifics. different signals above 15, and sigaction. */

 #define	SIGUSR1	16

 #define SIGUSR2	17

 #define SIGCLD	18

 #define	SIGPWR	19

 #define SIGWINCH 20

 #define	SIGPOLL	22	/* 20 for x.out binaries!!!! */

 #define	SIGSTOP	23	/* sendable stop signal not from tty */

 #define	SIGTSTP	24	/* stop signal from tty */

 #define	SIGCONT	25	/* continue a stopped process */

 #define	SIGTTIN	26	/* to readers pgrp upon background tty read */

 #define	SIGTTOU	27	/* like TTIN for output if (tp->t_local&LTOSTOP) */

 #define NSIG	28	

 #else

 #define	SIGURG	16	/* urgent condition on IO channel */

 #define	SIGSTOP	17	/* sendable stop signal not from tty */

 #define	SIGTSTP	18	/* stop signal from tty */

 #define	SIGCONT	19	/* continue a stopped process */

 #define	SIGCHLD	20	/* to parent on child stop or exit */

 #define	SIGCLD	20	/* System V name for SIGCHLD */

 #define	SIGTTIN	21	/* to readers pgrp upon background tty read */

 #define	SIGTTOU	22	/* like TTIN for output if (tp->t_local&LTOSTOP) */

 #define	SIGIO	23	/* input/output possible signal */

 #define	SIGPOLL	SIGIO	/* System V name for SIGIO */

 #define	SIGXCPU	24	/* exceeded CPU time limit */

 #define	SIGXFSZ	25	/* exceeded file size limit */

 #define	SIGVTALRM 26	/* virtual time alarm */

 #define	SIGPROF	27	/* profiling time alarm */

 #define	SIGWINCH 28	/* window changed */

 #define	SIGLOST 29	/* resource lost (eg, record-lock lost) */

 #define	SIGUSR1 30	/* user defined signal 1 */

 #define	SIGUSR2 31	/* user defined signal 2 */

 #define NSIG	32      /* signal 0 implied */

 #endif

 #endif

 #ifdef __cplusplus

 }

 #endif

 #endif /* _SYS_SIGNAL_H */