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

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.\" @(#)sigpause.2 8.1 (Berkeley) 6/2/93
.\" $FreeBSD$
.\"
.Dd June 2, 1993
.Dt SIGPAUSE 2
.Os
.Sh NAME
.Nm sigpause
.Nd atomically release blocked signals and wait for interrupt
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In signal.h
.Ft int
.Fn sigpause "int sigmask"
.Sh DESCRIPTION
.Sy This interface is made obsolete by
.Xr sigsuspend 2 .
.Pp
.Fn Sigpause
assigns
.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
.Sh SEE ALSO
.Xr kill 2 ,
.Xr sigaction 2 ,
.Xr sigblock 2 ,
.Xr sigprocmask 2 ,
.Xr sigsuspend 2 ,
.Xr sigvec 2
.Sh HISTORY
The
.Fn sigpause
function call appeared in
.Bx 4.2
and has been deprecated.