freebsd-nq/lib/libc/compat-43/sigpause.2

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.\" 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
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.\" 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
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" @(#)sigpause.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 SIGPAUSE 2
.Os
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.Sh NAME
.Nm sigpause
.Nd atomically release blocked signals and wait for interrupt
.Sh LIBRARY
.Lb libc
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.Sh SYNOPSIS
.In signal.h
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.Ft int
.Fn sigpause "int sigmask"
.Sh DESCRIPTION
.Sy This interface is made obsolete by
.Xr sigsuspend 2 .
.Pp
.Fn Sigpause
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assigns
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.Fa sigmask
to the set of masked signals
and then waits for a signal to arrive;
on return the set of masked signals is restored.
.Fa Sigmask
is usually 0 to indicate that no
signals are to be blocked.
.Fn Sigpause
always terminates by being interrupted, returning -1 with
.Va errno
set to
.Er EINTR
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.Sh SEE ALSO
.Xr kill 2 ,
.Xr sigaction 2 ,
.Xr sigblock 2 ,
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.Xr sigprocmask 2 ,
.Xr sigsuspend 2 ,
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.Xr sigvec 2
.Sh HISTORY
The
.Fn sigpause
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function call appeared in
.Bx 4.2
and has been deprecated.