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Annotation of 43BSDTahoe/man/man3/getprotoent.3, 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: .\"    @(#)getprotoent.3n      6.3 (Berkeley) 5/19/86
        !             6: .\"
        !             7: .TH GETPROTOENT 3N "May 19, 1986"
        !             8: .UC 5
        !             9: .SH NAME
        !            10: getprotoent, getprotobynumber, getprotobyname, setprotoent, endprotoent \- get protocol entry
        !            11: .SH SYNOPSIS
        !            12: .nf
        !            13: .ft B
        !            14: .B #include <netdb.h>
        !            15: .PP
        !            16: .ft B
        !            17: struct protoent *getprotoent()
        !            18: .PP
        !            19: .ft B
        !            20: struct protoent *getprotobyname(name)
        !            21: char *name;
        !            22: .PP
        !            23: .ft B
        !            24: struct protoent *getprotobynumber(proto)
        !            25: int proto;
        !            26: .PP
        !            27: .ft B
        !            28: setprotoent(stayopen)
        !            29: int stayopen
        !            30: .PP
        !            31: .ft B
        !            32: endprotoent()
        !            33: .fi
        !            34: .SH DESCRIPTION
        !            35: .IR Getprotoent ,
        !            36: .IR getprotobyname ,
        !            37: and
        !            38: .I getprotobynumber
        !            39: each return a pointer to an object with the
        !            40: following structure
        !            41: containing the broken-out
        !            42: fields of a line in the network protocol data base,
        !            43: .IR /etc/protocols .
        !            44: .RS
        !            45: .PP
        !            46: .nf
        !            47: struct protoent {
        !            48:        char    *p_name;        /* official name of protocol */
        !            49:        char    **p_aliases;    /* alias list */
        !            50:        int     p_proto;        /* protocol number */
        !            51: };
        !            52: .ft R
        !            53: .ad
        !            54: .fi
        !            55: .RE
        !            56: .PP
        !            57: The members of this structure are:
        !            58: .TP \w'p_aliases'u+2n
        !            59: p_name
        !            60: The official name of the protocol.
        !            61: .TP \w'p_aliases'u+2n
        !            62: p_aliases
        !            63: A zero terminated list of alternate names for the protocol.
        !            64: .TP \w'p_aliases'u+2n
        !            65: p_proto
        !            66: The protocol number.
        !            67: .PP
        !            68: .I Getprotoent
        !            69: reads the next line of the file, opening the file if necessary.
        !            70: .PP
        !            71: .I Setprotoent
        !            72: opens and rewinds the file.  If the
        !            73: .I stayopen
        !            74: flag is non-zero,
        !            75: the net data base will not be closed after each call to 
        !            76: .I getprotobyname
        !            77: or
        !            78: .IR getprotobynumber .
        !            79: .PP
        !            80: .I Endprotoent
        !            81: closes the file.
        !            82: .PP
        !            83: .I Getprotobyname
        !            84: and
        !            85: .I getprotobynumber
        !            86: sequentially search from the beginning
        !            87: of the file until a matching
        !            88: protocol name or
        !            89: protocol number is found,
        !            90: or until EOF is encountered.
        !            91: .SH FILES
        !            92: /etc/protocols
        !            93: .SH "SEE ALSO"
        !            94: protocols(5)
        !            95: .SH DIAGNOSTICS
        !            96: Null pointer
        !            97: (0) returned on EOF or error.
        !            98: .SH BUGS
        !            99: All information
        !           100: is contained in a static area
        !           101: so it must be copied if it is
        !           102: to be saved.  Only the Internet
        !           103: protocols are currently understood.

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