2 * SPDX-License-Identifier: BSD-2-Clause
4 * Copyright 2019 Pawel Biernacki, Mysterious Code Ltd.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/sysctl.h>
36 #include "libc_private.h"
38 #define SYSCTLBYNAME_OSREL 1201522
40 extern int __sysctlbyname(const char *name, size_t namelen, void *oldp,
41 size_t *oldlenp, const void *newp, size_t newlen);
44 sysctlbyname(const char *name, void *oldp, size_t *oldlenp,
45 const void *newp, size_t newlen)
50 if (__getosreldate() >= SYSCTLBYNAME_OSREL) {
52 return (__sysctlbyname(name, len, oldp, oldlenp, newp,
56 if (sysctlnametomib(name, oid, &len) == -1)
58 return (sysctl(oid, len, oldp, oldlenp, newp, newlen));