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

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.\" Copyright (c) 1983, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
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.\" modification, are permitted provided that the following conditions
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.\" This product includes software developed by the University of
.\" California, Berkeley and its contributors.
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.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" @(#)sigsetmask.2 8.1 (Berkeley) 6/2/93
1999-08-28 00:22:10 +00:00
.\" $FreeBSD$
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.\"
.Dd June 2, 1993
.Dt SIGSETMASK 2
.Os BSD 4.2
.Sh NAME
.Nm sigsetmask
.Nd set current signal mask
.Sh LIBRARY
.Lb libc
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.Sh SYNOPSIS
.Fd #include <signal.h>
.Ft int
.Fn sigsetmask "int mask"
.Fn sigmask signum
.Sh DESCRIPTION
.Bf -symbolic
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This interface is made obsolete by:
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.Ef
.Xr sigprocmask 2 .
.Pp
.Fn Sigsetmask
sets the current signal mask. Signals
are blocked from delivery if the
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corresponding bit in
.Fa mask
is a 1; 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 previous set of masked signals is returned.
.Sh SEE ALSO
.Xr kill 2 ,
.Xr sigaction 2 ,
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.Xr sigblock 2 ,
.Xr sigprocmask 2 ,
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.Xr sigsuspend 2 ,
.Xr sigvec 2 ,
.Xr sigsetops 3
.Sh HISTORY
The
.Fn sigsetmask
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function call appeared in
.Bx 4.2
and has been deprecated.