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Annotation of 43BSDReno/lib/libc/net/getservbyport.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #if defined(LIBC_SCCS) && !defined(lint)
        !            21: static char sccsid[] = "@(#)getservbyport.c    5.6 (Berkeley) 6/1/90";
        !            22: #endif /* LIBC_SCCS and not lint */
        !            23: 
        !            24: #include <netdb.h>
        !            25: 
        !            26: extern int _serv_stayopen;
        !            27: 
        !            28: struct servent *
        !            29: getservbyport(port, proto)
        !            30:        int port;
        !            31:        char *proto;
        !            32: {
        !            33:        register struct servent *p;
        !            34: 
        !            35:        setservent(_serv_stayopen);
        !            36:        while (p = getservent()) {
        !            37:                if (p->s_port != port)
        !            38:                        continue;
        !            39:                if (proto == 0 || strcmp(p->s_proto, proto) == 0)
        !            40:                        break;
        !            41:        }
        !            42:        if (!_serv_stayopen)
        !            43:                endservent();
        !            44:        return (p);
        !            45: }

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