xref: /netbsd-src/lib/libc/gen/sysctlnametomib.c (revision 23c8222edbfb0f0932d88a8351d3a0cf817dfb9e)
1 /*	$NetBSD: sysctlnametomib.c,v 1.2 2004/04/08 05:45:26 atatat Exp $ */
2 
3 /*-
4  * Copyright (c) 2003,2004 The NetBSD Foundation, Inc.
5  *	All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Andrew Brown.
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  * 3. Neither the name of The NetBSD Foundation nor the names of its
19  *    contributors may be used to endorse or promote products derived
20  *    from this software without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
26  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32  * POSSIBILITY OF SUCH DAMAGE.
33  */
34 
35 #include "namespace.h"
36 #include <sys/param.h>
37 #include <sys/sysctl.h>
38 
39 #ifdef __weak_alias
40 __weak_alias(sysctlnametomib,_sysctlnametomib)
41 #endif
42 
43 /*
44  * freebsd compatible sysctlnametomib() function, implemented as an
45  * extremely thin wrapper around sysctlgetmibinfo().  i think the use
46  * of size_t as the third argument is erroneous, but what can we do
47  * about that?
48  */
49 int
50 sysctlnametomib(const char *gname, int *iname, size_t *namelenp)
51 {
52 	u_int unamelen;
53 	int rc;
54 
55 	unamelen = *namelenp;
56 	rc = sysctlgetmibinfo(gname, iname, &unamelen, NULL, NULL, NULL,
57 			      SYSCTL_VERSION);
58 	*namelenp = unamelen;
59 
60 	return (rc);
61 }
62