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      1 /*	$NetBSD: getprotoent.c,v 1.12 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 
     33 #if defined(LIBC_SCCS) && !defined(lint)
     34 __RCSID("$NetBSD: getprotoent.c,v 1.12 2008/04/28 20:23:00 martin Exp $");
     35 #endif /* LIBC_SCCS and not lint */
     36 
     37 #include "namespace.h"
     38 #include "reentrant.h"
     39 
     40 #include <netdb.h>
     41 
     42 #include "protoent.h"
     43 
     44 #ifdef __weak_alias
     45 __weak_alias(endprotoent,_endprotoent)
     46 __weak_alias(getprotoent,_getprotoent)
     47 __weak_alias(setprotoent,_setprotoent)
     48 #endif
     49 
     50 #ifdef _REENTRANT
     51 mutex_t _protoent_mutex = MUTEX_INITIALIZER;
     52 #endif
     53 struct protoent_data _protoent_data;
     54 
     55 void
     56 setprotoent(int f)
     57 {
     58 	mutex_lock(&_protoent_mutex);
     59 	setprotoent_r(f, &_protoent_data);
     60 	mutex_unlock(&_protoent_mutex);
     61 }
     62 
     63 void
     64 endprotoent(void)
     65 {
     66 	mutex_lock(&_protoent_mutex);
     67 	endprotoent_r(&_protoent_data);
     68 	mutex_unlock(&_protoent_mutex);
     69 }
     70 
     71 struct protoent *
     72 getprotoent(void)
     73 {
     74 	struct protoent *p;
     75 
     76 	mutex_lock(&_protoent_mutex);
     77 	p = getprotoent_r(&_protoent_data.proto, &_protoent_data);
     78 	mutex_unlock(&_protoent_mutex);
     79 	return (p);
     80 }
     81