BSD 4_3_Net_2 release

[unix-history] / usr / src / lib / libc / compat-43 / sigpause.2

diff --git a/usr/src/lib/libc/compat-43/sigpause.2 b/usr/src/lib/libc/compat-43/sigpause.2
index 27fbb1f..704be03 100644 (file)
--- a/usr/src/lib/libc/compat-43/sigpause.2
+++ b/usr/src/lib/libc/compat-43/sigpause.2
@@ -1,57 +1,74 @@
-.\" Copyright (c) 1983 The Regents of the University of California.
+.\" Copyright (c) 1983, 1991 The Regents of the University of California.

 .\" All rights reserved.
 .\"
 .\" All rights reserved.
 .\"

-.\" Redistribution and use in source and binary forms are permitted provided
-.\" that: (1) source distributions retain this entire copyright notice and
-.\" comment, and (2) distributions including binaries display the following
-.\" acknowledgement:  ``This product includes software developed by the
-.\" University of California, Berkeley and its contributors'' in the
-.\" documentation or other materials provided with the distribution and in
-.\" all advertising materials mentioning features or use of this software.
-.\" 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
-.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
-.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+.\" 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.

 .\"
 .\"

-.\"    @(#)sigpause.2  6.5 (Berkeley) 7/1/90
+.\" 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.

 .\"
 .\"

-.TH SIGPAUSE 2 "July 1, 1990"
-.UC 4
-.SH NAME
-sigpause \- atomically release blocked signals and wait for interrupt
-.SH SYNOPSIS
-.ft B
-sigpause(sigmask)
-.br
-int sigmask;
-.ft R
-.SH DESCRIPTION
-.B "This interface is made obsolete by sigsuspend(2).
-.LP
-.I Sigpause
+.\"     @(#)sigpause.2 6.6 (Berkeley) 3/10/91
+.\"
+.Dd March 10, 1991
+.Dt SIGPAUSE 2
+.Os BSD 4
+.Sh NAME
+.Nm sigpause
+.Nd atomically release blocked signals and wait for interrupt
+.Sh SYNOPSIS
+.Fd #include <sys/signal.h>
+.Ft int
+.Fn sigpause "int sigmask"
+.Sh DESCRIPTION
+.Sy This interface is made obsolete by
+.Xr sigsuspend 2 .
+.Pp
+.Fn Sigpause

 assigns 
 assigns 

-.I sigmask
+.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.
 to the set of masked signals
 and then waits for a signal to arrive;
 on return the set of masked signals is restored.

-.I Sigmask
+.Fa Sigmask

 is usually 0 to indicate that no
 is usually 0 to indicate that no

-signals are now to be blocked.
-.I Sigpause
-always terminates by being interrupted, returning \-1 with
-.I errno
-set to EINTR.
-.PP
-In normal usage, a signal is blocked using
-.IR sigblock (2),
-to begin a critical section, variables modified on the occurrence
-of the signal are examined to determine that there is no work
-to be done, and the process pauses awaiting work by using
-.I sigpause
-with the mask returned by
-.IR sigblock .
-.SH SEE ALSO
-sigsuspend(2), kill(2), sigaction(2), sigprocmask(2),
-sigblock(2), sigvec(2)
+signals are to be blocked.
+.Fn Sigpause
+always terminates by being interrupted, returning -1 with
+.Va errno
+set to
+.Dv EINTR
+.Sh SEE ALSO
+.Xr sigsuspend 2 ,
+.Xr kill 2 ,
+.Xr sigaction 2 ,
+.Xr sigprocmask 2 ,
+.Xr sigblock 2 ,
+.Xr sigvec 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2
+and has been deprecated.