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Revision 1.8, Fri Apr 30 06:48:20 2010 UTC (3 years, 11 months ago) by wiz
Merge two entries for the same error.
.\" $NetBSD: sigset.3,v 1.8 2010/04/30 06:48:20 wiz Exp $ .\" .\" Copyright (c) 2003 The NetBSD Foundation, Inc. .\" All rights reserved. .\" .\" This code is derived from software contributed to The NetBSD Foundation .\" by Klaus Klein. .\" .\" 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. .\" .\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. .\" .Dd April 30, 2010 .Dt SIGSET 3 .Os .Sh NAME .Nm sigset .Nd manipulate signal dispositions .Sh LIBRARY .Lb libc .Sh SYNOPSIS .In signal.h .\" The following is Quite Ugly, but syntactically correct. Don't try to .\" fix it. .Ft void \*(lp* .Fn sigset "int sig" "void \*(lp*disp\*(rp\*(lpint\*(rp\*(rp\*(rp\*(lpint" .Sh DESCRIPTION .Bf -symbolic This interface is made obsolete by .Xr sigaction 2 and .Xr sigprocmask 2 . .Ef .Pp The .Fn sigset function manipulates the disposition of the signal .Fa sig . The new disposition is given in .Fa disp . .Pp If .Fa disp is one of .Dv SIG_DFL , .Dv SIG_IGN , or the address of a handler function, the disposition of .Fa sig is changed accordingly, and .Fa sig is removed from the process' signal mask. Also, if .Fa disp is the address of a handler function, .Fa sig will be added to the process' signal mask during execution of the handler. .Pp If .Fa disp is equal to .Dv SIG_HOLD , .Fa sig is added to the calling process' signal mask and the disposition of .Fa sig remains unchanged. .Sh RETURN VALUES If successful, the .Fn sigset function returns .Dv SIG_HOLD if .Fa sig had been blocked, and the previous disposition of .Fa sig if it had not been blocked. Otherwise .Dv SIG_ERR is returned and .Va errno is set to indicate the error. .Sh ERRORS The .Fn sigset function will fail if: .Bl -tag -width Er .It Bq Er EINVAL The argument .Fa sig is not a valid signal number; or an attempt is made to ignore a signal that cannot be ignored, such as .Dv SIGKILL or .Dv SIGSTOP . .El .Sh SEE ALSO .Xr sigaction 2 , .Xr sigprocmask 2 .Sh STANDARDS The .Fn sigset function conforms to .St -p1003.1-2001 . It was however marked as obsolete in the .St -p1003.1-2008 revision of the standard.