freebsd-dev/lib/libc/compat-43/sigsetmask.2

.\" 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.
.\" 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
The
.Fn sigsetmask
function
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.
The
.Fn sigblock
function
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
The
.Fn sigblock
and
.Fn sigsetmask
functions
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
functions first appeared in
.Bx 4.2
and have been deprecated.
BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00			`.\" 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.`
			`.\" 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`
$Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00			`.\" $FreeBSD$`
BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00			`.\"`
			`.Dd June 2, 1993`
			`.Dt SIGSETMASK 2`
mdoc(7) police: removed HISTORY info from the .Os call. 2001-07-10 13:41:46 +00:00			`.Os`
BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00			`.Sh NAME`
Merge the documentation for sigsetmask() and sigblock() into a single manual page, appropriately linked, since this removes the decision of which page the (previously non-existent) sigmask.2 MLINK should point at. Submitted by: will 2001-01-17 19:20:58 +00:00			`.Nm sigsetmask ,`
			`.Nm sigblock`
			`.Nd manipulate current signal mask`
Introduce ".Lb" macro to libc manpages. More libraries manpages updates following. 2000-04-21 09:42:15 +00:00			`.Sh LIBRARY`
			`.Lb libc`
BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00			`.Sh SYNOPSIS`
mdoc(7) police: Use the new .In macro for #include statements. 2001-10-01 16:09:29 +00:00			`.In signal.h`
BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00			`.Ft int`
			`.Fn sigsetmask "int mask"`
Merge the documentation for sigsetmask() and sigblock() into a single manual page, appropriately linked, since this removes the decision of which page the (previously non-existent) sigmask.2 MLINK should point at. Submitted by: will 2001-01-17 19:20:58 +00:00			`.Ft int`
			`.Fn sigblock "int mask"`
			`.Ft int`
			`.Fn sigmask "int signum"`
BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00			`.Sh DESCRIPTION`
			`.Bf -symbolic`
Typo cops. 1999-12-28 15:24:01 +00:00			`This interface is made obsolete by:`
BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00			`.Ef`
			`.Xr sigprocmask 2 .`
			`.Pp`
mdoc(7) police: "The .Fn function". 2002-12-18 12:45:11 +00:00			`The`
			`.Fn sigsetmask`
			`function`
Merge the documentation for sigsetmask() and sigblock() into a single manual page, appropriately linked, since this removes the decision of which page the (previously non-existent) sigmask.2 MLINK should point at. Submitted by: will 2001-01-17 19:20:58 +00:00			`sets the current signal mask to the specified`
			`.Fa mask .`
Remove whitespace at EOL. 2001-07-15 07:53:42 +00:00			`Signals are blocked from delivery if the corresponding bit in`
Merge the documentation for sigsetmask() and sigblock() into a single manual page, appropriately linked, since this removes the decision of which page the (previously non-existent) sigmask.2 MLINK should point at. Submitted by: will 2001-01-17 19:20:58 +00:00			`.Fa mask`
			`is a 1.`
mdoc(7) police: "The .Fn function". 2002-12-18 12:45:11 +00:00			`The`
			`.Fn sigblock`
			`function`
Merge the documentation for sigsetmask() and sigblock() into a single manual page, appropriately linked, since this removes the decision of which page the (previously non-existent) sigmask.2 MLINK should point at. Submitted by: will 2001-01-17 19:20:58 +00:00			`adds the signals in the specified`
BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00			`.Fa mask`
Merge the documentation for sigsetmask() and sigblock() into a single manual page, appropriately linked, since this removes the decision of which page the (previously non-existent) sigmask.2 MLINK should point at. Submitted by: will 2001-01-17 19:20:58 +00:00			`to the current signal mask,`
			`rather than overwriting it as`
			`.Fn sigsetmask`
			`does.`
			`The macro`
BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00			`.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`
mdoc(7) police: "The .Fn function". 2002-12-18 12:45:11 +00:00			`The`
			`.Fn sigblock`
Merge the documentation for sigsetmask() and sigblock() into a single manual page, appropriately linked, since this removes the decision of which page the (previously non-existent) sigmask.2 MLINK should point at. Submitted by: will 2001-01-17 19:20:58 +00:00			`and`
			`.Fn sigsetmask`
mdoc(7) police: "The .Fn function". 2002-12-18 12:45:11 +00:00			`functions`
Merge the documentation for sigsetmask() and sigblock() into a single manual page, appropriately linked, since this removes the decision of which page the (previously non-existent) sigmask.2 MLINK should point at. Submitted by: will 2001-01-17 19:20:58 +00:00			`return the previous set of masked signals.`
BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00			`.Sh SEE ALSO`
			`.Xr kill 2 ,`
			`.Xr sigaction 2 ,`
Sort cross references. 1997-01-20 23:10:39 +00:00			`.Xr sigprocmask 2 ,`
BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00			`.Xr sigsuspend 2 ,`
			`.Xr sigvec 2 ,`
			`.Xr sigsetops 3`
			`.Sh HISTORY`
			`The`
Update a bunch of man pages to use .Fn instead of .Nm when referencing funciton names. 1996-08-22 22:05:59 +00:00			`.Fn sigsetmask`
Merge the documentation for sigsetmask() and sigblock() into a single manual page, appropriately linked, since this removes the decision of which page the (previously non-existent) sigmask.2 MLINK should point at. Submitted by: will 2001-01-17 19:20:58 +00:00			`and`
			`.Fn sigblock`
mdoc(7) police: "The .Fn function". 2002-12-18 12:45:11 +00:00			`functions first appeared in`
BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00			`.Bx 4.2`
Merge the documentation for sigsetmask() and sigblock() into a single manual page, appropriately linked, since this removes the decision of which page the (previously non-existent) sigmask.2 MLINK should point at. Submitted by: will 2001-01-17 19:20:58 +00:00			`and have been deprecated.`