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.\" -*- nroff -*-
.\" Copyright (c) 1983, 1991 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.
.\"
.\" @(#)sigblock.2 6.7 (Berkeley) 3/10/91
.\"
.\" Modified Sat Jul 24 10:09:15 1993 by Rik Faith <faith@cs.unc.edu>
.\" Modified Fri Aug 11 1995 by Stephen Lee <sl14@cornell.edu>
.\" Modified 1995 by Mike Battersby <mib@deakin.edu.au>
.\""
.TH SIGBLOCK 2 "31/08/1995" "Linux 1.3" "Manual do Programador Linux"
.SH NOME
sigblock, siggetmask, sigsetmask, sigmask \- manipulam a mscara de sinalizao
.SH SINOPSE
.B #include <signal.h>
.sp
.BI "int sigblock(int " mask );
.sp
.B int siggetmask(void);
.sp
.BI "int sigsetmask(int " mask );
.sp
.BI "int sigmask(int " signum );
.SH DESCRIO
Esta interface foi tornada obsoleta por
.BR sigprocmask (2).
A chamada de sistema
.B sigblock
acrescenta sinais especificados em
.I mask
para o conjunto de sinais atualmente bloqueada a partir da entrega.
.PP
A chamada de sistema
.B sigsetmask
troca o conjunto de sinais bloqueados totalmente com o novo conjunto
especificado em
.IR mask .
Sinais so bloquados se o correspondente bit na
.I mask
um 1.
.PP
O conjunto atual de sinais bloquados podem ser obtidos usando
.BR siggetmask .
.PP
A macro
.B sigmask
provida para construir a mscara para um dado
.IR signum .
.SH "VALORES RETORNADOS"
.B siggetmask
devolve o conjunto atual dos sinais mascarados.
.B sigsetmask
e
.B sigblock
devolve o conjunto anterior dos sinais mascarados.
.SH NOTAS
Tipos primitivos desta funo so disponveis se
.B _BSD_SOURCE
definida antes da incluso de quaquer arquivo cabealho de sistema.
.PP
Ele no possibilita bloquear
.B SIGKILL
ou
.B SIGSTOP
\- esta restrio silenciosamente imposta pelo sistema.
.SH "DE ACORDO COM"
4.4BSD. Esta chamada de funo apareceu no BSD 4.3 e so oposta.
Use os aparatos de sinalizao POSIX para novos programas.
.SH "VEJA TAMBM"
.BR kill (2),
.BR sigprocmask (2),
.BR signal (7)
.SH TRADUZIDO POR LDP-BR em 22/08/2000.
\&\fR\&\f(CWAndr L. Fassone Canova <lonelywolf@blv.com.br> (traduo)\fR
\&\fR\&\f(CWxxxxxxxxxxxxxxxxxxxxxxxxx <xxx@xxxxxx.xxx.xx> (reviso)\fR
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