102 lines
3.0 KiB
Groff
102 lines
3.0 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.
|
|
.\"
|
|
.\" @(#)sigsetmask.2 8.1 (Berkeley) 6/2/93
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd June 2, 1993
|
|
.Dt SIGSETMASK 2
|
|
.Os
|
|
.Sh NAME
|
|
.Nm sigsetmask ,
|
|
.Nm sigblock
|
|
.Nd manipulate current signal mask
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.In signal.h
|
|
.Ft int
|
|
.Fn sigsetmask "int mask"
|
|
.Ft int
|
|
.Fn sigblock "int mask"
|
|
.Ft int
|
|
.Fn sigmask "int signum"
|
|
.Sh DESCRIPTION
|
|
.Bf -symbolic
|
|
This interface is made obsolete by:
|
|
.Ef
|
|
.Xr sigprocmask 2 .
|
|
.Pp
|
|
.Fn Sigsetmask
|
|
sets the current signal mask to the specified
|
|
.Fa mask .
|
|
Signals are blocked from delivery if the corresponding bit in
|
|
.Fa mask
|
|
is a 1.
|
|
.Fn Sigblock
|
|
adds the signals in the specified
|
|
.Fa mask
|
|
to the current signal mask,
|
|
rather than overwriting it as
|
|
.Fn sigsetmask
|
|
does.
|
|
The macro
|
|
.Fn sigmask
|
|
is provided to construct the mask for a given
|
|
.Fa signum .
|
|
.Pp
|
|
The system
|
|
quietly disallows
|
|
.Dv SIGKILL
|
|
or
|
|
.Dv SIGSTOP
|
|
to be blocked.
|
|
.Sh RETURN VALUES
|
|
.Fn Sigblock
|
|
and
|
|
.Fn sigsetmask
|
|
return the previous set of masked signals.
|
|
.Sh SEE ALSO
|
|
.Xr kill 2 ,
|
|
.Xr sigaction 2 ,
|
|
.Xr sigprocmask 2 ,
|
|
.Xr sigsuspend 2 ,
|
|
.Xr sigvec 2 ,
|
|
.Xr sigsetops 3
|
|
.Sh HISTORY
|
|
The
|
|
.Fn sigsetmask
|
|
and
|
|
.Fn sigblock
|
|
function calls first appeared in
|
|
.Bx 4.2
|
|
and have been deprecated.
|