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Annotation of 43BSDTahoe/man/man2/sigblock.2, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1983 Regents of the University of California.
        !             2: .\" All rights reserved.  The Berkeley software License Agreement
        !             3: .\" specifies the terms and conditions for redistribution.
        !             4: .\"
        !             5: .\"    @(#)sigblock.2  6.3 (Berkeley) 5/14/86
        !             6: .\"
        !             7: .TH SIGBLOCK 2 "May 14, 1986"
        !             8: .UC 5
        !             9: .SH NAME
        !            10: sigblock \- block signals
        !            11: .SH SYNOPSIS
        !            12: .nf
        !            13: .B #include <signal.h>
        !            14: 
        !            15: .B sigblock(mask);
        !            16: .B int mask;
        !            17: 
        !            18: .B mask = sigmask(signum)
        !            19: .SH DESCRIPTION
        !            20: .I Sigblock
        !            21: causes the signals specified in
        !            22: .I mask
        !            23: to be added to the set of signals currently
        !            24: being blocked from delivery.
        !            25: Signals are blocked if the
        !            26: corresponding bit in 
        !            27: .I mask
        !            28: is a 1; the macro
        !            29: .I sigmask
        !            30: is provided to construct the mask for a given
        !            31: .IR signum .
        !            32: .PP
        !            33: It is not possible to block SIGKILL,
        !            34: SIGSTOP, or SIGCONT;  this restriction is silently
        !            35: imposed by the system.
        !            36: .SH "RETURN VALUE
        !            37: The previous set of masked signals is returned.
        !            38: .SH "SEE ALSO"
        !            39: kill(2), sigvec(2), sigsetmask(2)

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