114 lines
3.4 KiB
Groff
114 lines
3.4 KiB
Groff
.\" Copyright (c) 1983, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)sigsetops.3 8.1 (Berkeley) 6/4/93
|
|
.\"
|
|
.Dd June 4, 1993
|
|
.Dt SIGSETOPS 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm sigemptyset ,
|
|
.Nm sigfillset ,
|
|
.Nm sigaddset ,
|
|
.Nm sigdelset ,
|
|
.Nm sigismember
|
|
.Nd manipulate signal sets
|
|
.Sh SYNOPSIS
|
|
.Fd #include <signal.h>
|
|
.Ft int
|
|
.Fn sigemptyset "sigset_t *set"
|
|
.Ft int
|
|
.Fn sigfillset "sigset_t *set"
|
|
.Ft int
|
|
.Fn sigaddset "sigset_t *set" "int signo"
|
|
.Ft int
|
|
.Fn sigdelset "sigset_t *set" "int signo"
|
|
.Ft int
|
|
.Fn sigismember "const sigset_t *set" "int signo"
|
|
.Sh DESCRIPTION
|
|
These functions manipulate signal sets stored in a
|
|
.Fa sigset_t .
|
|
Either
|
|
.Fn sigemptyset
|
|
or
|
|
.Fn sigfillset
|
|
must be called for every object of type
|
|
.Fa sigset_t
|
|
before any other use of the object.
|
|
.Pp
|
|
The
|
|
.Fn sigemptyset
|
|
function initializes a signal set to be empty.
|
|
.Pp
|
|
The
|
|
.Fn sigfillset
|
|
function initializes a signal set to contain all signals.
|
|
.Pp
|
|
The
|
|
.Fn sigaddset
|
|
function adds the specified signal
|
|
.Fa signo
|
|
to the signal set.
|
|
.Pp
|
|
The
|
|
.Fn sigdelset
|
|
function deletes the specified signal
|
|
.Fa signo
|
|
from the signal set.
|
|
.Pp
|
|
The
|
|
.Fn sigismember
|
|
function returns whether a specified signal
|
|
.Fa signo
|
|
is contained in the signal set.
|
|
.Pp
|
|
These functions
|
|
are provided as macros in the include file <signal.h>.
|
|
Actual functions are available
|
|
if their names are undefined (with #undef
|
|
.Em name ) .
|
|
.Sh RETURN VALUES
|
|
The
|
|
.Fn sigismember
|
|
function returns 1
|
|
if the signal is a member of the set,
|
|
0 otherwise.
|
|
The other functions return 0.
|
|
.Sh ERRORS
|
|
Currently no errors are detected.
|
|
.Sh SEE ALSO
|
|
.Xr kill 2 ,
|
|
.Xr sigaction 2 ,
|
|
.Xr sigsuspend 2
|
|
.Sh STANDARDS
|
|
These functions are defined by
|
|
.St -p1003.1-88 .
|