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/* $OpenBSD: getproto.c,v 1.8 2015/09/14 07:38:38 guenther Exp $ */ |
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/* |
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* Copyright (c) 1983, 1993 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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#include <netdb.h> |
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#include <stdio.h> |
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int |
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getprotobynumber_r(int num, struct protoent *pe, struct protoent_data *pd) |
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{ |
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int error; |
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setprotoent_r(pd->stayopen, pd); |
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while ((error = getprotoent_r(pe, pd)) == 0) |
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if (pe->p_proto == num) |
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break; |
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if (!pd->stayopen && pd->fp != NULL) { |
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(void)fclose(pd->fp); |
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pd->fp = NULL; |
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} |
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return (error); |
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} |
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DEF_WEAK(getprotobynumber_r); |
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struct protoent * |
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getprotobynumber(int num) |
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{ |
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extern struct protoent_data _protoent_data; |
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static struct protoent proto; |
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if (getprotobynumber_r(num, &proto, &_protoent_data) != 0) |
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return (NULL); |
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return (&proto); |
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} |