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/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
/*static char *sccsid = "from: @(#)getservbyport.c 5.7 (Berkeley) 2/24/91";*/
static char *rcsid = "$Id: getservbyport.c,v 1.1 1998/07/21 13:19:45 peter Exp $";
#endif /* LIBC_SCCS and not lint */
#include <stdio.h>
#include <netdb.h>
#include <string.h>
#include "serv_internal.h"
struct servent *getservbyport(int port, const char *proto)
{
char *buf = _serv_buf();
if (!buf)
return NULL;
return getservbyport_r(port, proto, (struct servent *) buf,
buf + sizeof(struct servent), SERV_BUFSIZE);
}
struct servent *getservbyport_r(int port, const char *proto,
struct servent *result, char *buf, int bufsize)
{
pthread_mutex_lock(&serv_iterate_lock);
setservent(0);
while ((result = getservent_r(result, buf, bufsize)) != NULL) {
if (result->s_port != port)
continue;
if (proto == NULL || strcmp(result->s_proto, proto) == 0)
break;
}
pthread_mutex_unlock(&serv_iterate_lock);
return result;
}
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