lib/libc/net/getprotobyname.c

   1 /*      $NetBSD: getprotobyname.c,v 1.4 2008/04/28 20:23:00 martin Exp $        */
   2
   3 /*-
   4  * Copyright (c) 2004 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Christos Zoulas.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31 #include <sys/cdefs.h>
  32 #if defined(LIBC_SCCS) && !defined(lint)
  33 __RCSID("$NetBSD: getprotobyname.c,v 1.4 2008/04/28 20:23:00 martin Exp $");
  34 #endif /* LIBC_SCCS and not lint */
  35
  36 #include "namespace.h"
  37 #include "reentrant.h"
  38
  39 #include <netdb.h>
  40
  41 #include "protoent.h"
  42
  43 #ifdef __weak_alias
  44 __weak_alias(getprotobyname,_getprotobyname)
  45 #endif
  46
  47 #ifdef _REENTRANT
  48 extern mutex_t _protoent_mutex;
  49 #endif
  50 extern struct protoent_data _protoent_data;
  51
  52 struct protoent *
  53 getprotobyname(const char *name)
  54 {
  55         struct protoent *p;
  56
  57         mutex_lock(&_protoent_mutex);
  58         p = getprotobyname_r(name, &_protoent_data.proto, &_protoent_data);
  59         mutex_unlock(&_protoent_mutex);
  60         return (p);
  61 }