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Annotation of 43BSDReno/lib/libc/compat-43/sigblock.2, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1983 The Regents of the University of California.
        !             2: .\" All rights reserved.
        !             3: .\"
        !             4: .\" Redistribution and use in source and binary forms are permitted provided
        !             5: .\" that: (1) source distributions retain this entire copyright notice and
        !             6: .\" comment, and (2) distributions including binaries display the following
        !             7: .\" acknowledgement:  ``This product includes software developed by the
        !             8: .\" University of California, Berkeley and its contributors'' in the
        !             9: .\" documentation or other materials provided with the distribution and in
        !            10: .\" all advertising materials mentioning features or use of this software.
        !            11: .\" Neither the name of the University nor the names of its contributors may
        !            12: .\" be used to endorse or promote products derived from this software without
        !            13: .\" specific prior written permission.
        !            14: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            15: .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            16: .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            17: .\"
        !            18: .\"    @(#)sigblock.2  6.6 (Berkeley) 7/1/90
        !            19: .\"
        !            20: .TH SIGBLOCK 2 "July 1, 1990"
        !            21: .UC 5
        !            22: .SH NAME
        !            23: sigblock \- block signals
        !            24: .SH SYNOPSIS
        !            25: .nf
        !            26: .B #include <signal.h>
        !            27: 
        !            28: .B sigblock(mask);
        !            29: .B int mask;
        !            30: 
        !            31: .B mask = sigmask(signum)
        !            32: .SH DESCRIPTION
        !            33: .B "This interface is made obsolete by sigprocmask(2).
        !            34: .LP
        !            35: .I Sigblock
        !            36: causes the signals specified in
        !            37: .I mask
        !            38: to be added to the set of signals currently
        !            39: being blocked from delivery.
        !            40: Signals are blocked if the
        !            41: corresponding bit in 
        !            42: .I mask
        !            43: is a 1; the macro
        !            44: .I sigmask
        !            45: is provided to construct the mask for a given
        !            46: .IR signum .
        !            47: .PP
        !            48: It is not possible to block SIGKILL
        !            49: or SIGSTOP; this restriction is silently
        !            50: imposed by the system.
        !            51: .SH "RETURN VALUE
        !            52: The previous set of masked signals is returned.
        !            53: .SH "SEE ALSO"
        !            54: kill(2), sigprocmask(2), sigaction(2), sigsetmask(2), sigsetops(3)

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