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Annotation of 43BSDReno/lib/libc/gen/sigsetops.3, 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: .\"    @(#)sigsetops.2 6.1 (Berkeley) 7/1/90
        !            19: .\"
        !            20: .TH SIGSETOPS 3 "July 1, 1990"
        !            21: .UC 7
        !            22: .SH NAME
        !            23: sigsetops, sigemptyset, sigfillset, sigaddset, sigdelset, sigismember \- manipulate signal masks
        !            24: .SH SYNOPSIS
        !            25: .nf
        !            26: .B #include <signal.h>
        !            27: 
        !            28: .B sigemptyset(set);
        !            29: .B sigset_t *set;
        !            30: 
        !            31: .B sigfillset(set);
        !            32: .B sigset_t *set;
        !            33: 
        !            34: .B sigaddset(set, signo);
        !            35: .B sigset_t *set;
        !            36: .B int signo;
        !            37: 
        !            38: .B sigdelset(set, signo);
        !            39: .B sigset_t *set;
        !            40: .B int signo;
        !            41: 
        !            42: .B sigismember(set, signo);
        !            43: .B sigset_t *set;
        !            44: .B int signo;
        !            45: 
        !            46: .SH DESCRIPTION
        !            47: These functions manipulate signal mask stored in a
        !            48: .IR sigset_t .
        !            49: They are provided as macros, but actual functions are available
        !            50: if their names are undefined (with #undef
        !            51: .IR name ).
        !            52: .PP
        !            53: The
        !            54: .I sigemptyset
        !            55: function initializes a signal set to be empty.
        !            56: The
        !            57: .I sigfillset
        !            58: function initializes a signal set to contain all of the known signals.
        !            59: One of these routines must be used to initialize a signal set
        !            60: before its use by the other functions.
        !            61: .PP
        !            62: The
        !            63: .I sigaddset
        !            64: function adds a specified signal
        !            65: .I signo
        !            66: to a signal set.
        !            67: The
        !            68: .I sigdelset
        !            69: function deletes a specified signal
        !            70: .I signo
        !            71: from a signal set.
        !            72: .PP
        !            73: The
        !            74: .I sigismember
        !            75: function tests whether a specified signal
        !            76: .I signo
        !            77: is contained in a signal set.
        !            78: .SH "RETURN VALUE
        !            79: The
        !            80: .I sigismember
        !            81: function returnes 1
        !            82: if the signal is a member of the set,
        !            83: a 0 otherwise.
        !            84: The other functions return 0 upon success.
        !            85: A \-1 return value
        !            86: indicates an error occurred and
        !            87: .I errno
        !            88: is set to indicated the reason.
        !            89: The current implementation does not detect any errors.
        !            90: .SH ERRORS
        !            91: These functions could fail if one of the following occurs:
        !            92: .TP 15
        !            93: [EINVAL]
        !            94: .I signo
        !            95: has an invalid value.
        !            96: .SH STANDARDS
        !            97: These functions are defined by POSIX.1.
        !            98: .SH "SEE ALSO"
        !            99: kill(2), sigaction(2), sigsetops(2), sigsuspend(2)

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