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sigsetops(3C)		 Standard C Library Functions		 sigsetops(3C)

NAME
       sigsetops, sigemptyset, sigfillset, sigaddset, sigdelset, sigismember -
       manipulate sets of signals

SYNOPSIS
       #include	<signal.h>

       int sigemptyset(sigset_t	*set);

       int sigfillset(sigset_t *set);

       int sigaddset(sigset_t *set, int	signo);

       int sigdelset(sigset_t *set, int	signo);

       int sigismember(sigset_t	*set, int signo);

DESCRIPTION
       These functions manipulate sigset_t data	types, representing the	set of
       signals supported by the	implementation.

       The sigemptyset() function initializes the set pointed to by set	to ex-
       clude all signals defined by the	system.

       The sigfillset()	function initializes the set pointed to	by set to  in-
       clude all signals defined by the	system.

       The  sigaddset()	 function  adds	the individual signal specified	by the
       value of	signo to the set pointed to by set.

       The sigdelset() function	deletes	the individual signal specified	by the
       value of	signo from the set pointed to by set.

       The  sigismember()  function checks whether the signal specified	by the
       value of	signo is a member of the set pointed to	by set.

       Any object of type sigset_t must	 be  initialized  by  applying	either
       sigemptyset() or	sigfillset() before applying any other operation.

RETURN VALUES
       Upon successful completion, the sigismember() function returns 1	if the
       specified signal	is a member of the specified set, or 0 if it is	not.

       Upon successful completion, the other functions return 0. Otherwise  -1
       is returned and errno is	set to indicate	the error.

ERRORS
       The sigaddset(),	sigdelset(), and sigismember() functions will fail if:

       EINVAL	       The  value  of the signo	argument is not	a valid	signal
		       number.

       The sigfillset()	function will fail if:

       EFAULT	       The set argument	specifies an invalid address.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE	TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Async-Signal-Safe		   |
       +-----------------------------+-----------------------------+

SEE ALSO
       sigaction(2),  sigpending(2),   sigprocmask(2),	 sigsuspend(2),	  sig-
       nal.h(3HEAD), attributes(5), standards(5)

SunOS 5.10			  19 Dec 2003			 sigsetops(3C)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | ATTRIBUTES | SEE ALSO

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